Finding the Third Proportional to 1,105.50 and 2,211

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.50 : 2,211 = 2,211 : x
2. Step 2: Convert to fraction form
   1,105.50/2,211 = 2,211/x
3. Step 3: Cross multiply
   1,105.50x = 2,211 × 2,211
4. Step 4: Simplify right side
   1,105.50x = 4,888,521
5. Step 5: Solve for x
   x = 4,888,521/1,105.50
6. Step 6: Final answer
   x = 4,422