Finding the Third Proportional to 57,418.50 and 83,859.75

Step by Step Solution

1. Step 1: Write the proportion equation
   57,418.50 : 83,859.75 = 83,859.75 : x
2. Step 2: Convert to fraction form
   57,418.50/83,859.75 = 83,859.75/x
3. Step 3: Cross multiply
   57,418.50x = 83,859.75 × 83,859.75
4. Step 4: Simplify right side
   57,418.50x = 7,032,457,670.06
5. Step 5: Solve for x
   x = 7,032,457,670.06/57,418.50
6. Step 6: Final answer
   x = 122,477.21