Finding the Third Proportional to 21,908 and 33,120

Step by Step Solution

1. Step 1: Write the proportion equation
   21,908 : 33,120 = 33,120 : x
2. Step 2: Convert to fraction form
   21,908/33,120 = 33,120/x
3. Step 3: Cross multiply
   21,908x = 33,120 × 33,120
4. Step 4: Simplify right side
   21,908x = 1,096,934,400
5. Step 5: Solve for x
   x = 1,096,934,400/21,908
6. Step 6: Final answer
   x = 50,070.04