Finding the Third Proportional to 21,918 and 33,900

Step by Step Solution

1. Step 1: Write the proportion equation
   21,918 : 33,900 = 33,900 : x
2. Step 2: Convert to fraction form
   21,918/33,900 = 33,900/x
3. Step 3: Cross multiply
   21,918x = 33,900 × 33,900
4. Step 4: Simplify right side
   21,918x = 1,149,210,000
5. Step 5: Solve for x
   x = 1,149,210,000/21,918
6. Step 6: Final answer
   x = 52,432.25