Possible. Not likely at all.
Go to
http://mlb.mlb.com/mlb/standings/index.jsp. Look for the "E#" for the Giants. If there are Dodgers wins or Giants losses that total that number (it's currently 2) the Giants will be eliminated.
The Giants would have to win all of there remaining games, and the Dodgers can't win more than 1. Or the Dodgers would have to lose all of their games, and the Giants could lose no more than one.