GE/GC=EF/CD

BD=CD, and e is the midpoint of AB.

∴EF/CD=EF/BD= 1/2

∴GE/CE=GE/(GE+GC)= 1/3

When DH∨AB intersects CE at H, GD/AD= 1/3, it can also be proved.

∴GE/CE=GD/AD= 1/3