Finding the Third Proportional to 8,422.75 and 13,173.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,422.75 : 13,173.38 = 13,173.38 : x
2. Step 2: Convert to fraction form
   8,422.75/13,173.38 = 13,173.38/x
3. Step 3: Cross multiply
   8,422.75x = 13,173.38 × 13,173.38
4. Step 4: Simplify right side
   8,422.75x = 173,537,808.89
5. Step 5: Solve for x
   x = 173,537,808.89/8,422.75
6. Step 6: Final answer
   x = 20,603.46