Finding the Third Proportional to 21,648 and 33,912

Step by Step Solution

1. Step 1: Write the proportion equation
   21,648 : 33,912 = 33,912 : x
2. Step 2: Convert to fraction form
   21,648/33,912 = 33,912/x
3. Step 3: Cross multiply
   21,648x = 33,912 × 33,912
4. Step 4: Simplify right side
   21,648x = 1,150,023,744
5. Step 5: Solve for x
   x = 1,150,023,744/21,648
6. Step 6: Final answer
   x = 53,123.79