Finding the Third Proportional to 6,401.25 and 13,389.75

Step by Step Solution

1. Step 1: Write the proportion equation
   6,401.25 : 13,389.75 = 13,389.75 : x
2. Step 2: Convert to fraction form
   6,401.25/13,389.75 = 13,389.75/x
3. Step 3: Cross multiply
   6,401.25x = 13,389.75 × 13,389.75
4. Step 4: Simplify right side
   6,401.25x = 179,285,405.06
5. Step 5: Solve for x
   x = 179,285,405.06/6,401.25
6. Step 6: Final answer
   x = 28,007.87