Finding the Third Proportional to 152,628 and 331,521

Step by Step Solution

1. Step 1: Write the proportion equation
   152,628 : 331,521 = 331,521 : x
2. Step 2: Convert to fraction form
   152,628/331,521 = 331,521/x
3. Step 3: Cross multiply
   152,628x = 331,521 × 331,521
4. Step 4: Simplify right side
   152,628x = 109,906,173,441
5. Step 5: Solve for x
   x = 109,906,173,441/152,628
6. Step 6: Final answer
   x = 720,091.81