Finding the Third Proportional to 21,510 and 33,243

Step by Step Solution

1. Step 1: Write the proportion equation
   21,510 : 33,243 = 33,243 : x
2. Step 2: Convert to fraction form
   21,510/33,243 = 33,243/x
3. Step 3: Cross multiply
   21,510x = 33,243 × 33,243
4. Step 4: Simplify right side
   21,510x = 1,105,097,049
5. Step 5: Solve for x
   x = 1,105,097,049/21,510
6. Step 6: Final answer
   x = 51,375.97