Finding the Third Proportional to 72,291 and 111,255

Step by Step Solution

1. Step 1: Write the proportion equation
   72,291 : 111,255 = 111,255 : x
2. Step 2: Convert to fraction form
   72,291/111,255 = 111,255/x
3. Step 3: Cross multiply
   72,291x = 111,255 × 111,255
4. Step 4: Simplify right side
   72,291x = 12,377,675,025
5. Step 5: Solve for x
   x = 12,377,675,025/72,291
6. Step 6: Final answer
   x = 171,220.14