Finding the Third Proportional to 57,067.50 and 85,286.25

Step by Step Solution

1. Step 1: Write the proportion equation
   57,067.50 : 85,286.25 = 85,286.25 : x
2. Step 2: Convert to fraction form
   57,067.50/85,286.25 = 85,286.25/x
3. Step 3: Cross multiply
   57,067.50x = 85,286.25 × 85,286.25
4. Step 4: Simplify right side
   57,067.50x = 7,273,744,439.06
5. Step 5: Solve for x
   x = 7,273,744,439.06/57,067.50
6. Step 6: Final answer
   x = 127,458.61