When you jack it up,  try to do it so that you can get a jack stand right beside the jack so it's in the same area. The jack point along the side rail on the pinch weld near the tires is usually several inches wide.  This will work if you position the floor jack correctly. It's usually no problem if you use a scissor jack that came with the car. 

You can also use almost any piece of metal that looks beefy or carries significant loads when the car is driving -don't use control arms or other suspension components themselves, unless specifically stated in the owner's manual. The car will drop due to the weight going on the  springs and it can also damage the components.  I generally use the solid mounting brackets the control arms or other suspension components mount to. Those brackets take the moving weight of the car any time you hit a bump or go around a corner, so they are more than strong enough to carry the static weight.