A long slender bar is made from an unknown material. The length of the bar is $1\mathrm{.}23$ m$,$ its cross$-$sectional area is $1\mathrm{.}95$ x $10^-4$ m$^2,$ and its mass is $1\mathrm{.}59$ kg$.$ A sound wave travels from one end of the bar to the other end in $1\mathrm{.}93$ x $10^-4$ s$.$ Find the Young's modulus of the unknown material.