Finding the Third Proportional to 122,080.50 and 251,469

Step by Step Solution

1. Step 1: Write the proportion equation
   122,080.50 : 251,469 = 251,469 : x
2. Step 2: Convert to fraction form
   122,080.50/251,469 = 251,469/x
3. Step 3: Cross multiply
   122,080.50x = 251,469 × 251,469
4. Step 4: Simplify right side
   122,080.50x = 63,236,657,961
5. Step 5: Solve for x
   x = 63,236,657,961/122,080.50
6. Step 6: Final answer
   x = 517,991.47