Finding the Third Proportional to 129,488 and 284,671.50

Step by Step Solution

1. Step 1: Write the proportion equation
   129,488 : 284,671.50 = 284,671.50 : x
2. Step 2: Convert to fraction form
   129,488/284,671.50 = 284,671.50/x
3. Step 3: Cross multiply
   129,488x = 284,671.50 × 284,671.50
4. Step 4: Simplify right side
   129,488x = 81,037,862,912.25
5. Step 5: Solve for x
   x = 81,037,862,912.25/129,488
6. Step 6: Final answer
   x = 625,833.00