Finding the Third Proportional to 89,480.25 and 121,089.38

Step by Step Solution

1. Step 1: Write the proportion equation
   89,480.25 : 121,089.38 = 121,089.38 : x
2. Step 2: Convert to fraction form
   89,480.25/121,089.38 = 121,089.38/x
3. Step 3: Cross multiply
   89,480.25x = 121,089.38 × 121,089.38
4. Step 4: Simplify right side
   89,480.25x = 14,662,636,737.89
5. Step 5: Solve for x
   x = 14,662,636,737.89/89,480.25
6. Step 6: Final answer
   x = 163,864.50