Finding the Third Proportional to 51,122 and 111,539

Step by Step Solution

1. Step 1: Write the proportion equation
   51,122 : 111,539 = 111,539 : x
2. Step 2: Convert to fraction form
   51,122/111,539 = 111,539/x
3. Step 3: Cross multiply
   51,122x = 111,539 × 111,539
4. Step 4: Simplify right side
   51,122x = 12,440,948,521
5. Step 5: Solve for x
   x = 12,440,948,521/51,122
6. Step 6: Final answer
   x = 243,358.02