Finding the Third Proportional to 3,542.06 and 8,311.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,542.06 : 8,311.78 = 8,311.78 : x
2. Step 2: Convert to fraction form
   3,542.06/8,311.78 = 8,311.78/x
3. Step 3: Cross multiply
   3,542.06x = 8,311.78 × 8,311.78
4. Step 4: Simplify right side
   3,542.06x = 69,085,707.55
5. Step 5: Solve for x
   x = 69,085,707.55/3,542.06
6. Step 6: Final answer
   x = 19,504.37