The forward-bias currents in a pn junction diode and a Schottky diode are \(0.72 \mathrm{~mA}\). The reverse-saturation currents are \(I_{S}=5 \times 10^{-13} \mathrm{~A}\) and \(I_{S}=5 \times 10^{-8} \mathrm{~A}\), respectively. Determine the forward-bias voltage across each diode.