Finding the Third Proportional to 575,430 and 871,141.50

Step by Step Solution

1. Step 1: Write the proportion equation
   575,430 : 871,141.50 = 871,141.50 : x
2. Step 2: Convert to fraction form
   575,430/871,141.50 = 871,141.50/x
3. Step 3: Cross multiply
   575,430x = 871,141.50 × 871,141.50
4. Step 4: Simplify right side
   575,430x = 758,887,513,022.25
5. Step 5: Solve for x
   x = 758,887,513,022.25/575,430
6. Step 6: Final answer
   x = 1,318,818.12