Finding the Third Proportional to 21,620 and 30,918

Step by Step Solution

1. Step 1: Write the proportion equation
   21,620 : 30,918 = 30,918 : x
2. Step 2: Convert to fraction form
   21,620/30,918 = 30,918/x
3. Step 3: Cross multiply
   21,620x = 30,918 × 30,918
4. Step 4: Simplify right side
   21,620x = 955,922,724
5. Step 5: Solve for x
   x = 955,922,724/21,620
6. Step 6: Final answer
   x = 44,214.74