Michael measured an apartment and made a scale drawing. The scale of the drawing was 3 centimeters : 2 meters. The living room is 6 meters wide in real life. How wide is the living room in the drawing?
The proportion to find the width of the living room in the drawing is 3 centimeters : 2 meters = x centimeters : 6 meters.
Cross-multiplying, we get 2x = 6 * 3.
Dividing both sides by 2, we get x = 9 centimeters. Answer: \boxed{9}.