\[b_{1} = 3;\ \ b_{2} = 6;\]
\[q = \frac{6}{3} = 2;\]
\[S_{10} = \frac{b_{1}\left( q^{10} - 1 \right)}{q - 1} = \frac{3\left( 2^{10} - 1 \right)}{2 - 1} =\]
\[= 3 \cdot 1024 = 3072.\]
\[Ответ:3072.\]