Finding the Third Proportional to 9,939 and 21,822

Step by Step Solution

1. Step 1: Write the proportion equation
   9,939 : 21,822 = 21,822 : x
2. Step 2: Convert to fraction form
   9,939/21,822 = 21,822/x
3. Step 3: Cross multiply
   9,939x = 21,822 × 21,822
4. Step 4: Simplify right side
   9,939x = 476,199,684
5. Step 5: Solve for x
   x = 476,199,684/9,939
6. Step 6: Final answer
   x = 47,912.23