Finding the Third Proportional to 8,522.72 and 13,015.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,522.72 : 13,015.69 = 13,015.69 : x
2. Step 2: Convert to fraction form
   8,522.72/13,015.69 = 13,015.69/x
3. Step 3: Cross multiply
   8,522.72x = 13,015.69 × 13,015.69
4. Step 4: Simplify right side
   8,522.72x = 169,408,121.10
5. Step 5: Solve for x
   x = 169,408,121.10/8,522.72
6. Step 6: Final answer
   x = 19,877.24