Finding the Third Proportional to 13,722 and 21,249

Step by Step Solution

1. Step 1: Write the proportion equation
   13,722 : 21,249 = 21,249 : x
2. Step 2: Convert to fraction form
   13,722/21,249 = 21,249/x
3. Step 3: Cross multiply
   13,722x = 21,249 × 21,249
4. Step 4: Simplify right side
   13,722x = 451,520,001
5. Step 5: Solve for x
   x = 451,520,001/13,722
6. Step 6: Final answer
   x = 32,904.82