399
Firstly;
the number is x, and being consecutive occurs right after each other so the three numbers will be :X,X+1,X+2.
so their sum will be equal to 60
(X)+(X+1)+(X+2)= 60.
note: the sign separating the bracket is a plus and not a multiplication sign, so it is the same as them adding themselves
X+X+X+2+1=60
3X+3=60
3(X+1)=60
X+1=20
X=20-1
X=1
The product of the lowest and highest numbers being X,X+2
19×(19+2)
19×21=399