Finding the Third Proportional to 89,606.25 and 121,765.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,606.25 : 121,765.50 = 121,765.50 : x
2. Step 2: Convert to fraction form
   89,606.25/121,765.50 = 121,765.50/x
3. Step 3: Cross multiply
   89,606.25x = 121,765.50 × 121,765.50
4. Step 4: Simplify right side
   89,606.25x = 14,826,836,990.25
5. Step 5: Solve for x
   x = 14,826,836,990.25/89,606.25
6. Step 6: Final answer
   x = 165,466.55