Finding the Third Proportional to 81,878.50 and 130,198

Step by Step Solution

1. Step 1: Write the proportion equation
   81,878.50 : 130,198 = 130,198 : x
2. Step 2: Convert to fraction form
   81,878.50/130,198 = 130,198/x
3. Step 3: Cross multiply
   81,878.50x = 130,198 × 130,198
4. Step 4: Simplify right side
   81,878.50x = 16,951,519,204
5. Step 5: Solve for x
   x = 16,951,519,204/81,878.50
6. Step 6: Final answer
   x = 207,032.61