Finding the Third Proportional to 132,743 and 286,617.50

Step by Step Solution

1. Step 1: Write the proportion equation
   132,743 : 286,617.50 = 286,617.50 : x
2. Step 2: Convert to fraction form
   132,743/286,617.50 = 286,617.50/x
3. Step 3: Cross multiply
   132,743x = 286,617.50 × 286,617.50
4. Step 4: Simplify right side
   132,743x = 82,149,591,306.25
5. Step 5: Solve for x
   x = 82,149,591,306.25/132,743
6. Step 6: Final answer
   x = 618,861.95