Finding the Third Proportional to 81,761 and 109,876

Step by Step Solution

1. Step 1: Write the proportion equation
   81,761 : 109,876 = 109,876 : x
2. Step 2: Convert to fraction form
   81,761/109,876 = 109,876/x
3. Step 3: Cross multiply
   81,761x = 109,876 × 109,876
4. Step 4: Simplify right side
   81,761x = 12,072,735,376
5. Step 5: Solve for x
   x = 12,072,735,376/81,761
6. Step 6: Final answer
   x = 147,658.85