Finding the Third Proportional to 51,132 and 111,561

Step by Step Solution

1. Step 1: Write the proportion equation
   51,132 : 111,561 = 111,561 : x
2. Step 2: Convert to fraction form
   51,132/111,561 = 111,561/x
3. Step 3: Cross multiply
   51,132x = 111,561 × 111,561
4. Step 4: Simplify right side
   51,132x = 12,445,856,721
5. Step 5: Solve for x
   x = 12,445,856,721/51,132
6. Step 6: Final answer
   x = 243,406.41