Finding the Third Proportional to 328,806 and 717,187.50

Step by Step Solution

1. Step 1: Write the proportion equation
   328,806 : 717,187.50 = 717,187.50 : x
2. Step 2: Convert to fraction form
   328,806/717,187.50 = 717,187.50/x
3. Step 3: Cross multiply
   328,806x = 717,187.50 × 717,187.50
4. Step 4: Simplify right side
   328,806x = 514,357,910,156.25
5. Step 5: Solve for x
   x = 514,357,910,156.25/328,806
6. Step 6: Final answer
   x = 1,564,320.33