Finding the Third Proportional to 89,304 and 121,612.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,304 : 121,612.50 = 121,612.50 : x
2. Step 2: Convert to fraction form
   89,304/121,612.50 = 121,612.50/x
3. Step 3: Cross multiply
   89,304x = 121,612.50 × 121,612.50
4. Step 4: Simplify right side
   89,304x = 14,789,600,156.25
5. Step 5: Solve for x
   x = 14,789,600,156.25/89,304
6. Step 6: Final answer
   x = 165,609.60