Finding the Third Proportional to 328,987.50 and 717,468

Step by Step Solution

1. Step 1: Write the proportion equation
   328,987.50 : 717,468 = 717,468 : x
2. Step 2: Convert to fraction form
   328,987.50/717,468 = 717,468/x
3. Step 3: Cross multiply
   328,987.50x = 717,468 × 717,468
4. Step 4: Simplify right side
   328,987.50x = 514,760,331,024
5. Step 5: Solve for x
   x = 514,760,331,024/328,987.50
6. Step 6: Final answer
   x = 1,564,680.52