Two widely separated conducting spheres, Sphere \(X\) of radius \(3R\) and Sphere \(Y\) of radius \(R\), are connected by a long, thin conducting wire. A total positive charge \(Q\) is placed on the two-sphere system. After electrostatic equilibrium is established, what is the ratio of the magnitude of the electric field just outside the surface of Sphere \(X\) to that just outside the surface of Sphere \(Y\), \(\dfrac{E_X}{E_Y}\)?