Finding the Third Proportional to 152,708 and 328,830

Step by Step Solution

1. Step 1: Write the proportion equation
   152,708 : 328,830 = 328,830 : x
2. Step 2: Convert to fraction form
   152,708/328,830 = 328,830/x
3. Step 3: Cross multiply
   152,708x = 328,830 × 328,830
4. Step 4: Simplify right side
   152,708x = 108,129,168,900
5. Step 5: Solve for x
   x = 108,129,168,900/152,708
6. Step 6: Final answer
   x = 708,077.96