Finding the Third Proportional to 516,991.50 and 757,462.50

Step by Step Solution

1. Step 1: Write the proportion equation
   516,991.50 : 757,462.50 = 757,462.50 : x
2. Step 2: Convert to fraction form
   516,991.50/757,462.50 = 757,462.50/x
3. Step 3: Cross multiply
   516,991.50x = 757,462.50 × 757,462.50
4. Step 4: Simplify right side
   516,991.50x = 573,749,438,906.25
5. Step 5: Solve for x
   x = 573,749,438,906.25/516,991.50
6. Step 6: Final answer
   x = 1,109,785.05