Finding the Third Proportional to 13,644 and 20,562

Step by Step Solution

1. Step 1: Write the proportion equation
   13,644 : 20,562 = 20,562 : x
2. Step 2: Convert to fraction form
   13,644/20,562 = 20,562/x
3. Step 3: Cross multiply
   13,644x = 20,562 × 20,562
4. Step 4: Simplify right side
   13,644x = 422,795,844
5. Step 5: Solve for x
   x = 422,795,844/13,644
6. Step 6: Final answer
   x = 30,987.68