Finding the Third Proportional to 8,215.88 and 13,349.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,215.88 : 13,349.25 = 13,349.25 : x
2. Step 2: Convert to fraction form
   8,215.88/13,349.25 = 13,349.25/x
3. Step 3: Cross multiply
   8,215.88x = 13,349.25 × 13,349.25
4. Step 4: Simplify right side
   8,215.88x = 178,202,475.56
5. Step 5: Solve for x
   x = 178,202,475.56/8,215.88
6. Step 6: Final answer
   x = 21,690.02