Finding the Third Proportional to 81,391.50 and 120,906

Step by Step Solution

1. Step 1: Write the proportion equation
   81,391.50 : 120,906 = 120,906 : x
2. Step 2: Convert to fraction form
   81,391.50/120,906 = 120,906/x
3. Step 3: Cross multiply
   81,391.50x = 120,906 × 120,906
4. Step 4: Simplify right side
   81,391.50x = 14,618,260,836
5. Step 5: Solve for x
   x = 14,618,260,836/81,391.50
6. Step 6: Final answer
   x = 179,604.27