Finding the Third Proportional to 12,996 and 20,685

Step by Step Solution

1. Step 1: Write the proportion equation
   12,996 : 20,685 = 20,685 : x
2. Step 2: Convert to fraction form
   12,996/20,685 = 20,685/x
3. Step 3: Cross multiply
   12,996x = 20,685 × 20,685
4. Step 4: Simplify right side
   12,996x = 427,869,225
5. Step 5: Solve for x
   x = 427,869,225/12,996
6. Step 6: Final answer
   x = 32,923.15