Finding the Third Proportional to 21,390 and 33,249

Step by Step Solution

1. Step 1: Write the proportion equation
   21,390 : 33,249 = 33,249 : x
2. Step 2: Convert to fraction form
   21,390/33,249 = 33,249/x
3. Step 3: Cross multiply
   21,390x = 33,249 × 33,249
4. Step 4: Simplify right side
   21,390x = 1,105,496,001
5. Step 5: Solve for x
   x = 1,105,496,001/21,390
6. Step 6: Final answer
   x = 51,682.84