Finding the Third Proportional to 89,521.50 and 121,151.25

Step by Step Solution

1. Step 1: Write the proportion equation
   89,521.50 : 121,151.25 = 121,151.25 : x
2. Step 2: Convert to fraction form
   89,521.50/121,151.25 = 121,151.25/x
3. Step 3: Cross multiply
   89,521.50x = 121,151.25 × 121,151.25
4. Step 4: Simplify right side
   89,521.50x = 14,677,625,376.56
5. Step 5: Solve for x
   x = 14,677,625,376.56/89,521.50
6. Step 6: Final answer
   x = 163,956.43