A solution that was $3\mathrm{.}14$x$10^-3$ M in X had a transmittance of $0\mathrm{.}126$ when measured in a $2\mathrm{.}00$cm cell. what concentration of X would be required for the transmittance to be increased by a factor of $3$ when a $1\mathrm{.}00$ cm cell was used? $($The answer is $2\mathrm{.}34$x$10^-3$ M but my work is wrong$).$