Finding the Third Proportional to 57,703.48 and 86,324.56

Step by Step Solution

1. Step 1: Write the proportion equation
   57,703.48 : 86,324.56 = 86,324.56 : x
2. Step 2: Convert to fraction form
   57,703.48/86,324.56 = 86,324.56/x
3. Step 3: Cross multiply
   57,703.48x = 86,324.56 × 86,324.56
4. Step 4: Simplify right side
   57,703.48x = 7,451,930,259.42
5. Step 5: Solve for x
   x = 7,451,930,259.42/57,703.48
6. Step 6: Final answer
   x = 129,141.78