Finding the Third Proportional to 1,383.50 and 2,191

Step by Step Solution

1. Step 1: Write the proportion equation
   1,383.50 : 2,191 = 2,191 : x
2. Step 2: Convert to fraction form
   1,383.50/2,191 = 2,191/x
3. Step 3: Cross multiply
   1,383.50x = 2,191 × 2,191
4. Step 4: Simplify right side
   1,383.50x = 4,800,481
5. Step 5: Solve for x
   x = 4,800,481/1,383.50
6. Step 6: Final answer
   x = 3,469.81