Where the Taniwha hides (BOP)

A taniwha hides here guarding the treasure that
you seek - so take care not to disturb him as you may get gobbled
up !!!
How to solve this puzzle:
Using numbers 1 through 9, each number only once,
create three 3-digit numbers. The second number is double the
first. The third number is tripple the first.

The letters represent the numbers that you use to
complete this puzzle and form the final co-ords.
S 37° 42.BBH ~ E 176° 09.DEF
Please rehide well