Finding the Third Proportional to 19,996 and 40,680

Step by Step Solution

1. Step 1: Write the proportion equation
   19,996 : 40,680 = 40,680 : x
2. Step 2: Convert to fraction form
   19,996/40,680 = 40,680/x
3. Step 3: Cross multiply
   19,996x = 40,680 × 40,680
4. Step 4: Simplify right side
   19,996x = 1,654,862,400
5. Step 5: Solve for x
   x = 1,654,862,400/19,996
6. Step 6: Final answer
   x = 82,759.67