\[b_{1} = 0,3;\ \ b_{2} = 1,8;\]
\[q = \frac{b_{2}}{b_{3}} = \frac{1,8}{0,3} = 6.\]
\[b_{3} = b_{2}q = 1,8 \cdot 6 = 10,8.\]
\[b_{4} = 10,8 \cdot 6 = 64,8.\]
\[b_{5} = 64,8 \cdot 6 = 388,8.\]
\[b_{6} = 388,8 \cdot 6 = 2332,8.\]