Finding the Third Proportional to 89,517 and 121,144.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,517 : 121,144.50 = 121,144.50 : x
2. Step 2: Convert to fraction form
   89,517/121,144.50 = 121,144.50/x
3. Step 3: Cross multiply
   89,517x = 121,144.50 × 121,144.50
4. Step 4: Simplify right side
   89,517x = 14,675,989,880.25
5. Step 5: Solve for x
   x = 14,675,989,880.25/89,517
6. Step 6: Final answer
   x = 163,946.40