Finding the Third Proportional to 42,934.50 and 57,840.75

Step by Step Solution

1. Step 1: Write the proportion equation
   42,934.50 : 57,840.75 = 57,840.75 : x
2. Step 2: Convert to fraction form
   42,934.50/57,840.75 = 57,840.75/x
3. Step 3: Cross multiply
   42,934.50x = 57,840.75 × 57,840.75
4. Step 4: Simplify right side
   42,934.50x = 3,345,552,360.56
5. Step 5: Solve for x
   x = 3,345,552,360.56/42,934.50
6. Step 6: Final answer
   x = 77,922.24