Find the Third Term a_n=2(3)^n

$a_{n} = 2 {(3)}^{n}$

Substitute in the value of $n$ to find the $n$ th term.

$a_{3} = 2 {(3)}^{3}$

Raise $3$ to the power of $3$ .

$a_{3} = 2 \cdot 27$

Multiply $2$ by $27$ .

$a_{3} = 54$