Finding the Third Proportional to 575,451 and 871,171.50

Step by Step Solution

1. Step 1: Write the proportion equation
   575,451 : 871,171.50 = 871,171.50 : x
2. Step 2: Convert to fraction form
   575,451/871,171.50 = 871,171.50/x
3. Step 3: Cross multiply
   575,451x = 871,171.50 × 871,171.50
4. Step 4: Simplify right side
   575,451x = 758,939,782,412.25
5. Step 5: Solve for x
   x = 758,939,782,412.25/575,451
6. Step 6: Final answer
   x = 1,318,860.83