Finding the Third Proportional to 5,721.45 and 8,747.07

Step by Step Solution

1. Step 1: Write the proportion equation
   5,721.45 : 8,747.07 = 8,747.07 : x
2. Step 2: Convert to fraction form
   5,721.45/8,747.07 = 8,747.07/x
3. Step 3: Cross multiply
   5,721.45x = 8,747.07 × 8,747.07
4. Step 4: Simplify right side
   5,721.45x = 76,511,156.83
5. Step 5: Solve for x
   x = 76,511,156.83/5,721.45
6. Step 6: Final answer
   x = 13,372.68