Finding the Third Proportional to 6,408 and 7,015.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,408 : 7,015.50 = 7,015.50 : x
2. Step 2: Convert to fraction form
   6,408/7,015.50 = 7,015.50/x
3. Step 3: Cross multiply
   6,408x = 7,015.50 × 7,015.50
4. Step 4: Simplify right side
   6,408x = 49,217,240.25
5. Step 5: Solve for x
   x = 49,217,240.25/6,408
6. Step 6: Final answer
   x = 7,680.59