Finding the Third Proportional to 72,480 and 111,544

Step by Step Solution

1. Step 1: Write the proportion equation
   72,480 : 111,544 = 111,544 : x
2. Step 2: Convert to fraction form
   72,480/111,544 = 111,544/x
3. Step 3: Cross multiply
   72,480x = 111,544 × 111,544
4. Step 4: Simplify right side
   72,480x = 12,442,063,936
5. Step 5: Solve for x
   x = 12,442,063,936/72,480
6. Step 6: Final answer
   x = 171,662.03