Finding the Third Proportional to 129,964.50 and 284,388

Step by Step Solution

1. Step 1: Write the proportion equation
   129,964.50 : 284,388 = 284,388 : x
2. Step 2: Convert to fraction form
   129,964.50/284,388 = 284,388/x
3. Step 3: Cross multiply
   129,964.50x = 284,388 × 284,388
4. Step 4: Simplify right side
   129,964.50x = 80,876,534,544
5. Step 5: Solve for x
   x = 80,876,534,544/129,964.50
6. Step 6: Final answer
   x = 622,297.12