Finding the Third Proportional to 328,833 and 717,943.50

Step by Step Solution

1. Step 1: Write the proportion equation
   328,833 : 717,943.50 = 717,943.50 : x
2. Step 2: Convert to fraction form
   328,833/717,943.50 = 717,943.50/x
3. Step 3: Cross multiply
   328,833x = 717,943.50 × 717,943.50
4. Step 4: Simplify right side
   328,833x = 515,442,869,192.25
5. Step 5: Solve for x
   x = 515,442,869,192.25/328,833
6. Step 6: Final answer
   x = 1,567,491.31