Finding the Third Proportional to 20,794 and 42,812

Step by Step Solution

1. Step 1: Write the proportion equation
   20,794 : 42,812 = 42,812 : x
2. Step 2: Convert to fraction form
   20,794/42,812 = 42,812/x
3. Step 3: Cross multiply
   20,794x = 42,812 × 42,812
4. Step 4: Simplify right side
   20,794x = 1,832,867,344
5. Step 5: Solve for x
   x = 1,832,867,344/20,794
6. Step 6: Final answer
   x = 88,144.05