Finding the Third Proportional to 57,243.75 and 84,209.25

Step by Step Solution

1. Step 1: Write the proportion equation
   57,243.75 : 84,209.25 = 84,209.25 : x
2. Step 2: Convert to fraction form
   57,243.75/84,209.25 = 84,209.25/x
3. Step 3: Cross multiply
   57,243.75x = 84,209.25 × 84,209.25
4. Step 4: Simplify right side
   57,243.75x = 7,091,197,785.56
5. Step 5: Solve for x
   x = 7,091,197,785.56/57,243.75
6. Step 6: Final answer
   x = 123,877.24