Finding the Third Proportional to 20,982 and 43,380

Step by Step Solution

1. Step 1: Write the proportion equation
   20,982 : 43,380 = 43,380 : x
2. Step 2: Convert to fraction form
   20,982/43,380 = 43,380/x
3. Step 3: Cross multiply
   20,982x = 43,380 × 43,380
4. Step 4: Simplify right side
   20,982x = 1,881,824,400
5. Step 5: Solve for x
   x = 1,881,824,400/20,982
6. Step 6: Final answer
   x = 89,687.56