Finding the Third Proportional to 8,867.25 and 13,729.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,867.25 : 13,729.88 = 13,729.88 : x
2. Step 2: Convert to fraction form
   8,867.25/13,729.88 = 13,729.88/x
3. Step 3: Cross multiply
   8,867.25x = 13,729.88 × 13,729.88
4. Step 4: Simplify right side
   8,867.25x = 188,509,467.52
5. Step 5: Solve for x
   x = 188,509,467.52/8,867.25
6. Step 6: Final answer
   x = 21,259.07