Finding the Third Proportional to 72,121 and 111,962

Step by Step Solution

1. Step 1: Write the proportion equation
   72,121 : 111,962 = 111,962 : x
2. Step 2: Convert to fraction form
   72,121/111,962 = 111,962/x
3. Step 3: Cross multiply
   72,121x = 111,962 × 111,962
4. Step 4: Simplify right side
   72,121x = 12,535,489,444
5. Step 5: Solve for x
   x = 12,535,489,444/72,121
6. Step 6: Final answer
   x = 173,811.92