Finding the Third Proportional to 152,215 and 328,562

Step by Step Solution

1. Step 1: Write the proportion equation
   152,215 : 328,562 = 328,562 : x
2. Step 2: Convert to fraction form
   152,215/328,562 = 328,562/x
3. Step 3: Cross multiply
   152,215x = 328,562 × 328,562
4. Step 4: Simplify right side
   152,215x = 107,952,987,844
5. Step 5: Solve for x
   x = 107,952,987,844/152,215
6. Step 6: Final answer
   x = 709,213.86