Finding the Third Proportional to 57,231.50 and 84,134.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,231.50 : 84,134.50 = 84,134.50 : x
2. Step 2: Convert to fraction form
   57,231.50/84,134.50 = 84,134.50/x
3. Step 3: Cross multiply
   57,231.50x = 84,134.50 × 84,134.50
4. Step 4: Simplify right side
   57,231.50x = 7,078,614,090.25
5. Step 5: Solve for x
   x = 7,078,614,090.25/57,231.50
6. Step 6: Final answer
   x = 123,683.88