DealBook reports that Google Inc. (NASDAQ: GOOG) is shoving more chips to the middle of the table in its battle for a stake in Facebook.

Facebook's investors, which include Accel Partners and Greylock Partners, want a deal that values Facebook between $10 billion and $15 billion. That would mean that Microsoft Corp. (NASDAQ: MSFT) or Google would have to fork over $1.5 billion for a 5% to 10% stake.

Who will win this Facebook face-off? Google wants to raise the price so high that Microsoft will walk away. But Microsoft is said to be willing to pay any price to keep Facebook away from Google. We'll know who wins in 24 to 48 hours.

But we won't need to wait that long to find the real winner -- Facebook CEO Mark Zuckerberg and his investors are guaranteed to make big bank on this deal regardless of who wins the Google-Microsoft face-off.

Update: The New York Times reports that Microsoft won the Facebook face-off -- paying $240 million for a 1.6% stake -- valuing Facebook at $15 billion. That's 100 times its expected $150 million in 2007 revenue -- valuing $1 of Facebook's sales at 7.1 times more than a dollar of Google's -- whose Price/Sales (P/S) ratio is 14.1 -- and 17.5 times that of Microsoft's which sports a P/S ratio of 5.7. It looks like the old school Harvard ties paid off (that's where Gates, Ballmer, and Zuckerberg attended college).

Peter Cohan is President of Peter S. Cohan & Associates, a management consulting and venture capital firm. He also teaches management at Babson College and edits The Cohan Letter. He has no financial interest in Google or Microsoft.