Finding the Third Proportional to 21,908 and 33,505

Step by Step Solution

1. Step 1: Write the proportion equation
   21,908 : 33,505 = 33,505 : x
2. Step 2: Convert to fraction form
   21,908/33,505 = 33,505/x
3. Step 3: Cross multiply
   21,908x = 33,505 × 33,505
4. Step 4: Simplify right side
   21,908x = 1,122,585,025
5. Step 5: Solve for x
   x = 1,122,585,025/21,908
6. Step 6: Final answer
   x = 51,240.87