Finding the Third Proportional to 89,479.13 and 121,087.69

Step by Step Solution

1. Step 1: Write the proportion equation
   89,479.13 : 121,087.69 = 121,087.69 : x
2. Step 2: Convert to fraction form
   89,479.13/121,087.69 = 121,087.69/x
3. Step 3: Cross multiply
   89,479.13x = 121,087.69 × 121,087.69
4. Step 4: Simplify right side
   89,479.13x = 14,662,228,064.10
5. Step 5: Solve for x
   x = 14,662,228,064.10/89,479.13
6. Step 6: Final answer
   x = 163,862.00