Finding the Third Proportional to 328,036.50 and 717,561

Step by Step Solution

1. Step 1: Write the proportion equation
   328,036.50 : 717,561 = 717,561 : x
2. Step 2: Convert to fraction form
   328,036.50/717,561 = 717,561/x
3. Step 3: Cross multiply
   328,036.50x = 717,561 × 717,561
4. Step 4: Simplify right side
   328,036.50x = 514,893,788,721
5. Step 5: Solve for x
   x = 514,893,788,721/328,036.50
6. Step 6: Final answer
   x = 1,569,623.47