Finding the Third Proportional to 150.89 and 330.61

Step by Step Solution

1. Step 1: Write the proportion equation
   150.89 : 330.61 = 330.61 : x
2. Step 2: Convert to fraction form
   150.89/330.61 = 330.61/x
3. Step 3: Cross multiply
   150.89x = 330.61 × 330.61
4. Step 4: Simplify right side
   150.89x = 109,302.56
5. Step 5: Solve for x
   x = 109,302.56/150.89
6. Step 6: Final answer
   x = 724.38