Finding the Third Proportional to 89,312 and 124,872

Step by Step Solution

1. Step 1: Write the proportion equation
   89,312 : 124,872 = 124,872 : x
2. Step 2: Convert to fraction form
   89,312/124,872 = 124,872/x
3. Step 3: Cross multiply
   89,312x = 124,872 × 124,872
4. Step 4: Simplify right side
   89,312x = 15,593,016,384
5. Step 5: Solve for x
   x = 15,593,016,384/89,312
6. Step 6: Final answer
   x = 174,590.38