Finding the Third Proportional to 865,166 and 1,157,287

Step by Step Solution

1. Step 1: Write the proportion equation
   865,166 : 1,157,287 = 1,157,287 : x
2. Step 2: Convert to fraction form
   865,166/1,157,287 = 1,157,287/x
3. Step 3: Cross multiply
   865,166x = 1,157,287 × 1,157,287
4. Step 4: Simplify right side
   865,166x = 1,339,313,200,369
5. Step 5: Solve for x
   x = 1,339,313,200,369/865,166
6. Step 6: Final answer
   x = 1,548,041.88