Finding the Third Proportional to 575,442 and 871,158

Step by Step Solution

1. Step 1: Write the proportion equation
   575,442 : 871,158 = 871,158 : x
2. Step 2: Convert to fraction form
   575,442/871,158 = 871,158/x
3. Step 3: Cross multiply
   575,442x = 871,158 × 871,158
4. Step 4: Simplify right side
   575,442x = 758,916,260,964
5. Step 5: Solve for x
   x = 758,916,260,964/575,442
6. Step 6: Final answer
   x = 1,318,840.58