Finding the Third Proportional to 9,636 and 20,919

Step by Step Solution

1. Step 1: Write the proportion equation
   9,636 : 20,919 = 20,919 : x
2. Step 2: Convert to fraction form
   9,636/20,919 = 20,919/x
3. Step 3: Cross multiply
   9,636x = 20,919 × 20,919
4. Step 4: Simplify right side
   9,636x = 437,604,561
5. Step 5: Solve for x
   x = 437,604,561/9,636
6. Step 6: Final answer
   x = 45,413.51