Finding the Third Proportional to 21,122 and 45,920

Step by Step Solution

1. Step 1: Write the proportion equation
   21,122 : 45,920 = 45,920 : x
2. Step 2: Convert to fraction form
   21,122/45,920 = 45,920/x
3. Step 3: Cross multiply
   21,122x = 45,920 × 45,920
4. Step 4: Simplify right side
   21,122x = 2,108,646,400
5. Step 5: Solve for x
   x = 2,108,646,400/21,122
6. Step 6: Final answer
   x = 99,831.76