Finding the Third Proportional to 40,268 and 81,616

Step by Step Solution

1. Step 1: Write the proportion equation
   40,268 : 81,616 = 81,616 : x
2. Step 2: Convert to fraction form
   40,268/81,616 = 81,616/x
3. Step 3: Cross multiply
   40,268x = 81,616 × 81,616
4. Step 4: Simplify right side
   40,268x = 6,661,171,456
5. Step 5: Solve for x
   x = 6,661,171,456/40,268
6. Step 6: Final answer
   x = 165,420.97