If your jack is too short to reach that crossmember and still have room to pump the handle (I'm talking from the front of the car), you can drive up on a couple of short 2 by 8s, or anything to get the front tires a little off the ground, and gain enough room for the jack handle to have room to pump. You put the jack right in the middle of the crossmember, take it up as far as you want, then put jack stands on both outer edges of the crossmember. Of course if you don't need the space you can leave the jack in place as well.