Help with Pokerroom $2RB Final Table hand

There are 6 players left and I am 4th in chips with 400K after posting the BB. Blinds are 60K/30K.

Big stack is 1.2 million. 2 other stacks are around 850K and 2 others around 300K. Table has had alot of action. 4 players have busted in the last 15 minutes.

Everyone folds to the button who just calls. He has 850K and has been playing very loose. I am dealt 6 [img]/images/graemlins/heart.gif[/img]8 [img]/images/graemlins/spade.gif[/img] in the BB.

SB folds and I check. There is 150K in the pot.

Flop comes 6 [img]/images/graemlins/spade.gif[/img]9 [img]/images/graemlins/spade.gif[/img]4 [img]/images/graemlins/heart.gif[/img].

Action is to me. What should i have done in this spot?