Finding the Third Proportional to 152,644 and 328,616

Step by Step Solution

1. Step 1: Write the proportion equation
   152,644 : 328,616 = 328,616 : x
2. Step 2: Convert to fraction form
   152,644/328,616 = 328,616/x
3. Step 3: Cross multiply
   152,644x = 328,616 × 328,616
4. Step 4: Simplify right side
   152,644x = 107,988,475,456
5. Step 5: Solve for x
   x = 107,988,475,456/152,644
6. Step 6: Final answer
   x = 707,453.13