Finding the Third Proportional to 152,746 and 328,999

Step by Step Solution

1. Step 1: Write the proportion equation
   152,746 : 328,999 = 328,999 : x
2. Step 2: Convert to fraction form
   152,746/328,999 = 328,999/x
3. Step 3: Cross multiply
   152,746x = 328,999 × 328,999
4. Step 4: Simplify right side
   152,746x = 108,240,342,001
5. Step 5: Solve for x
   x = 108,240,342,001/152,746
6. Step 6: Final answer
   x = 708,629.63