Finding the Third Proportional to 40,781.81 and 57,430.69

Step by Step Solution

1. Step 1: Write the proportion equation
   40,781.81 : 57,430.69 = 57,430.69 : x
2. Step 2: Convert to fraction form
   40,781.81/57,430.69 = 57,430.69/x
3. Step 3: Cross multiply
   40,781.81x = 57,430.69 × 57,430.69
4. Step 4: Simplify right side
   40,781.81x = 3,298,283,866.72
5. Step 5: Solve for x
   x = 3,298,283,866.72/40,781.81
6. Step 6: Final answer
   x = 80,876.34