The figure shows a pump fitted with a piston and a handle. The pump is connected by tubing to three cylindrical containers. The area of each cylinder is given in terms of A (the area of the pump). The heights of the pump and cylinders are given in terms of y. The pump and all the cylinders are completely filled with oil and contain no air pockets. The handle of the pump is pushed down with a force of F.

What will be the force pushing upward on the top of cylinder 3? Show your work in symbolic form.