Finding the Third Proportional to 20,853 and 42,554

Step by Step Solution

1. Step 1: Write the proportion equation
   20,853 : 42,554 = 42,554 : x
2. Step 2: Convert to fraction form
   20,853/42,554 = 42,554/x
3. Step 3: Cross multiply
   20,853x = 42,554 × 42,554
4. Step 4: Simplify right side
   20,853x = 1,810,842,916
5. Step 5: Solve for x
   x = 1,810,842,916/20,853
6. Step 6: Final answer
   x = 86,838.48