Finding the Third Proportional to 11,112 and 21,920

Step by Step Solution

1. Step 1: Write the proportion equation
   11,112 : 21,920 = 21,920 : x
2. Step 2: Convert to fraction form
   11,112/21,920 = 21,920/x
3. Step 3: Cross multiply
   11,112x = 21,920 × 21,920
4. Step 4: Simplify right side
   11,112x = 480,486,400
5. Step 5: Solve for x
   x = 480,486,400/11,112
6. Step 6: Final answer
   x = 43,240.32