Finding the Third Proportional to 89,521 and 121,150.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,521 : 121,150.50 = 121,150.50 : x
2. Step 2: Convert to fraction form
   89,521/121,150.50 = 121,150.50/x
3. Step 3: Cross multiply
   89,521x = 121,150.50 × 121,150.50
4. Step 4: Simplify right side
   89,521x = 14,677,443,650.25
5. Step 5: Solve for x
   x = 14,677,443,650.25/89,521
6. Step 6: Final answer
   x = 163,955.31