Finding the Third Proportional to 83,087.25 and 128,898

Step by Step Solution

1. Step 1: Write the proportion equation
   83,087.25 : 128,898 = 128,898 : x
2. Step 2: Convert to fraction form
   83,087.25/128,898 = 128,898/x
3. Step 3: Cross multiply
   83,087.25x = 128,898 × 128,898
4. Step 4: Simplify right side
   83,087.25x = 16,614,694,404
5. Step 5: Solve for x
   x = 16,614,694,404/83,087.25
6. Step 6: Final answer
   x = 199,966.83