Finding the Third Proportional to 26,640.56 and 57,431.53

Step by Step Solution

1. Step 1: Write the proportion equation
   26,640.56 : 57,431.53 = 57,431.53 : x
2. Step 2: Convert to fraction form
   26,640.56/57,431.53 = 57,431.53/x
3. Step 3: Cross multiply
   26,640.56x = 57,431.53 × 57,431.53
4. Step 4: Simplify right side
   26,640.56x = 3,298,380,781.72
5. Step 5: Solve for x
   x = 3,298,380,781.72/26,640.56
6. Step 6: Final answer
   x = 123,810.48