Finding the Third Proportional to 152,779.50 and 328,963

Step by Step Solution

1. Step 1: Write the proportion equation
   152,779.50 : 328,963 = 328,963 : x
2. Step 2: Convert to fraction form
   152,779.50/328,963 = 328,963/x
3. Step 3: Cross multiply
   152,779.50x = 328,963 × 328,963
4. Step 4: Simplify right side
   152,779.50x = 108,216,655,369
5. Step 5: Solve for x
   x = 108,216,655,369/152,779.50
6. Step 6: Final answer
   x = 708,319.21