Finding the Third Proportional to 9,722 and 21,388

Step by Step Solution

1. Step 1: Write the proportion equation
   9,722 : 21,388 = 21,388 : x
2. Step 2: Convert to fraction form
   9,722/21,388 = 21,388/x
3. Step 3: Cross multiply
   9,722x = 21,388 × 21,388
4. Step 4: Simplify right side
   9,722x = 457,446,544
5. Step 5: Solve for x
   x = 457,446,544/9,722
6. Step 6: Final answer
   x = 47,052.72