Finding the Third Proportional to 2,788.50 and 5,631

Step by Step Solution

1. Step 1: Write the proportion equation
   2,788.50 : 5,631 = 5,631 : x
2. Step 2: Convert to fraction form
   2,788.50/5,631 = 5,631/x
3. Step 3: Cross multiply
   2,788.50x = 5,631 × 5,631
4. Step 4: Simplify right side
   2,788.50x = 31,708,161
5. Step 5: Solve for x
   x = 31,708,161/2,788.50
6. Step 6: Final answer
   x = 11,371.05