Finding the Third Proportional to 42,662.06 and 57,431.63

Step by Step Solution

1. Step 1: Write the proportion equation
   42,662.06 : 57,431.63 = 57,431.63 : x
2. Step 2: Convert to fraction form
   42,662.06/57,431.63 = 57,431.63/x
3. Step 3: Cross multiply
   42,662.06x = 57,431.63 × 57,431.63
4. Step 4: Simplify right side
   42,662.06x = 3,298,391,550.14
5. Step 5: Solve for x
   x = 3,298,391,550.14/42,662.06
6. Step 6: Final answer
   x = 77,314.39