Finding the Third Proportional to 9,636 and 20,499

Step by Step Solution

1. Step 1: Write the proportion equation
   9,636 : 20,499 = 20,499 : x
2. Step 2: Convert to fraction form
   9,636/20,499 = 20,499/x
3. Step 3: Cross multiply
   9,636x = 20,499 × 20,499
4. Step 4: Simplify right side
   9,636x = 420,209,001
5. Step 5: Solve for x
   x = 420,209,001/9,636
6. Step 6: Final answer
   x = 43,608.24