To multiply \( (5\sqrt{19})(6\sqrt{2}) \), you can multiply the coefficients (5 and 6) and the square roots separately:
\[ 5 \times 6 = 30 \]
And for the square roots:
\[ \sqrt{19} \times \sqrt{2} = \sqrt{19 \times 2} = \sqrt{38} \]
Now, combine the two results:
\[ (5\sqrt{19})(6\sqrt{2}) = 30\sqrt{38} \]
Thus, the exact answer is:
\[ 30\sqrt{38} \]