Finding the Third Proportional to 20,442 and 42,348

Step by Step Solution

1. Step 1: Write the proportion equation
   20,442 : 42,348 = 42,348 : x
2. Step 2: Convert to fraction form
   20,442/42,348 = 42,348/x
3. Step 3: Cross multiply
   20,442x = 42,348 × 42,348
4. Step 4: Simplify right side
   20,442x = 1,793,353,104
5. Step 5: Solve for x
   x = 1,793,353,104/20,442
6. Step 6: Final answer
   x = 87,728.85