Finding the Third Proportional to 129,969 and 283,441.50

Step by Step Solution

1. Step 1: Write the proportion equation
   129,969 : 283,441.50 = 283,441.50 : x
2. Step 2: Convert to fraction form
   129,969/283,441.50 = 283,441.50/x
3. Step 3: Cross multiply
   129,969x = 283,441.50 × 283,441.50
4. Step 4: Simplify right side
   129,969x = 80,339,083,922.25
5. Step 5: Solve for x
   x = 80,339,083,922.25/129,969
6. Step 6: Final answer
   x = 618,140.36