Finding the Third Proportional to 151,240 and 330,156

Step by Step Solution

1. Step 1: Write the proportion equation
   151,240 : 330,156 = 330,156 : x
2. Step 2: Convert to fraction form
   151,240/330,156 = 330,156/x
3. Step 3: Cross multiply
   151,240x = 330,156 × 330,156
4. Step 4: Simplify right side
   151,240x = 109,002,984,336
5. Step 5: Solve for x
   x = 109,002,984,336/151,240
6. Step 6: Final answer
   x = 720,728.54