Finding the Third Proportional to 6,697.69 and 13,729.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,697.69 : 13,729.50 = 13,729.50 : x
2. Step 2: Convert to fraction form
   6,697.69/13,729.50 = 13,729.50/x
3. Step 3: Cross multiply
   6,697.69x = 13,729.50 × 13,729.50
4. Step 4: Simplify right side
   6,697.69x = 188,499,170.25
5. Step 5: Solve for x
   x = 188,499,170.25/6,697.69
6. Step 6: Final answer
   x = 28,143.92