Finding the Third Proportional to 129,007.50 and 303,543

Step by Step Solution

1. Step 1: Write the proportion equation
   129,007.50 : 303,543 = 303,543 : x
2. Step 2: Convert to fraction form
   129,007.50/303,543 = 303,543/x
3. Step 3: Cross multiply
   129,007.50x = 303,543 × 303,543
4. Step 4: Simplify right side
   129,007.50x = 92,138,352,849
5. Step 5: Solve for x
   x = 92,138,352,849/129,007.50
6. Step 6: Final answer
   x = 714,209.27