Finding the Third Proportional to 72,332 and 111,989

Step by Step Solution

1. Step 1: Write the proportion equation
   72,332 : 111,989 = 111,989 : x
2. Step 2: Convert to fraction form
   72,332/111,989 = 111,989/x
3. Step 3: Cross multiply
   72,332x = 111,989 × 111,989
4. Step 4: Simplify right side
   72,332x = 12,541,536,121
5. Step 5: Solve for x
   x = 12,541,536,121/72,332
6. Step 6: Final answer
   x = 173,388.49