Respuesta:
54
Explicación paso a paso:
[tex] \frac{a}{b} = \frac{b}{c} \\ [/tex]
C es la tercera proporcional
(REEMPLAZA)
[tex] \frac{6}{18} = \frac{18}{c} [/tex]
[tex]6c = 324 \\ c = \frac{324}{6} \\ c = 54[/tex]
[tex]6 \sqrt{3} [/tex]
[tex] \frac{6}{b} = \frac{b}{18} [/tex]
[tex] {b}^{2} = 6 \times 18[/tex]
[tex]b = \sqrt{2 \times 3 \times 2 \times 9} [/tex]
[tex]b = 6 \sqrt{3} [/tex]
