ln(x)=5ln(y)=ln(y5), so x=y5.
log(2x)=log(2y5)=2+3log(2y)=2+log(8y3),
log(2y5)-log(8y3)=2,
log(2y5/(8y3))=2,
log(y2/4)=2.
If we assume base 10 log then:
y2/4=102=100, y2=400, y=20 (y≠-20 because ln(y) would be invalid).
SOLUTION: y=20, so x=205=3200000.
CHECK
log10(6400000)=2+3log10(40),
5+6log10(2)=2+log10(64000),
5+6log10(2)=2+3+6log10(2)✔️