To solve the equation \( 2.9 = \frac{x}{6} \), we need to isolate \( x \). We can do this by multiplying both sides of the equation by 6:
\[ 2.9 \times 6 = x \]
Now we calculate \( 2.9 \times 6 \):
\[ 2.9 \times 6 = 17.4 \]
Thus, we have:
\[ x = 17.4 \]
So, the value of \( x \) is \( 17.4 \).