Finding the Third Proportional to 111,066.19 and 239,862.52

Step by Step Solution

1. Step 1: Write the proportion equation
   111,066.19 : 239,862.52 = 239,862.52 : x
2. Step 2: Convert to fraction form
   111,066.19/239,862.52 = 239,862.52/x
3. Step 3: Cross multiply
   111,066.19x = 239,862.52 × 239,862.52
4. Step 4: Simplify right side
   111,066.19x = 57,534,026,401.95
5. Step 5: Solve for x
   x = 57,534,026,401.95/111,066.19
6. Step 6: Final answer
   x = 518,015.68