Finding the Third Proportional to 8,644.22 and 13,045.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,644.22 : 13,045.78 = 13,045.78 : x
2. Step 2: Convert to fraction form
   8,644.22/13,045.78 = 13,045.78/x
3. Step 3: Cross multiply
   8,644.22x = 13,045.78 × 13,045.78
4. Step 4: Simplify right side
   8,644.22x = 170,192,408.42
5. Step 5: Solve for x
   x = 170,192,408.42/8,644.22
6. Step 6: Final answer
   x = 19,688.58