Finding the Third Proportional to 89,650 and 121,818

Step by Step Solution

1. Step 1: Write the proportion equation
   89,650 : 121,818 = 121,818 : x
2. Step 2: Convert to fraction form
   89,650/121,818 = 121,818/x
3. Step 3: Cross multiply
   89,650x = 121,818 × 121,818
4. Step 4: Simplify right side
   89,650x = 14,839,625,124
5. Step 5: Solve for x
   x = 14,839,625,124/89,650
6. Step 6: Final answer
   x = 165,528.45