Finding the Third Proportional to 89,040 and 124,488

Step by Step Solution

1. Step 1: Write the proportion equation
   89,040 : 124,488 = 124,488 : x
2. Step 2: Convert to fraction form
   89,040/124,488 = 124,488/x
3. Step 3: Cross multiply
   89,040x = 124,488 × 124,488
4. Step 4: Simplify right side
   89,040x = 15,497,262,144
5. Step 5: Solve for x
   x = 15,497,262,144/89,040
6. Step 6: Final answer
   x = 174,048.32