Finding the Third Proportional to 51,810 and 111,891

Step by Step Solution

1. Step 1: Write the proportion equation
   51,810 : 111,891 = 111,891 : x
2. Step 2: Convert to fraction form
   51,810/111,891 = 111,891/x
3. Step 3: Cross multiply
   51,810x = 111,891 × 111,891
4. Step 4: Simplify right side
   51,810x = 12,519,595,881
5. Step 5: Solve for x
   x = 12,519,595,881/51,810
6. Step 6: Final answer
   x = 241,644.39