Finding the Third Proportional to 129,060 and 283,540.50

Step by Step Solution

1. Step 1: Write the proportion equation
   129,060 : 283,540.50 = 283,540.50 : x
2. Step 2: Convert to fraction form
   129,060/283,540.50 = 283,540.50/x
3. Step 3: Cross multiply
   129,060x = 283,540.50 × 283,540.50
4. Step 4: Simplify right side
   129,060x = 80,395,215,140.25
5. Step 5: Solve for x
   x = 80,395,215,140.25/129,060
6. Step 6: Final answer
   x = 622,928.99