Finding the Third Proportional to 575,455 and 871,176.50

Step by Step Solution

1. Step 1: Write the proportion equation
   575,455 : 871,176.50 = 871,176.50 : x
2. Step 2: Convert to fraction form
   575,455/871,176.50 = 871,176.50/x
3. Step 3: Cross multiply
   575,455x = 871,176.50 × 871,176.50
4. Step 4: Simplify right side
   575,455x = 758,948,494,152.25
5. Step 5: Solve for x
   x = 758,948,494,152.25/575,455
6. Step 6: Final answer
   x = 1,318,866.80