Finding the Third Proportional to 328,907.50 and 708,572

Step by Step Solution

1. Step 1: Write the proportion equation
   328,907.50 : 708,572 = 708,572 : x
2. Step 2: Convert to fraction form
   328,907.50/708,572 = 708,572/x
3. Step 3: Cross multiply
   328,907.50x = 708,572 × 708,572
4. Step 4: Simplify right side
   328,907.50x = 502,074,279,184
5. Step 5: Solve for x
   x = 502,074,279,184/328,907.50
6. Step 6: Final answer
   x = 1,526,490.82