Finding the Third Proportional to 555,765 and 861,103.50

Step by Step Solution

1. Step 1: Write the proportion equation
   555,765 : 861,103.50 = 861,103.50 : x
2. Step 2: Convert to fraction form
   555,765/861,103.50 = 861,103.50/x
3. Step 3: Cross multiply
   555,765x = 861,103.50 × 861,103.50
4. Step 4: Simplify right side
   555,765x = 741,499,237,712.25
5. Step 5: Solve for x
   x = 741,499,237,712.25/555,765
6. Step 6: Final answer
   x = 1,334,195.64