Finding the Third Proportional to 8,064.38 and 12,672.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,064.38 : 12,672.56 = 12,672.56 : x
2. Step 2: Convert to fraction form
   8,064.38/12,672.56 = 12,672.56/x
3. Step 3: Cross multiply
   8,064.38x = 12,672.56 × 12,672.56
4. Step 4: Simplify right side
   8,064.38x = 160,593,840.32
5. Step 5: Solve for x
   x = 160,593,840.32/8,064.38
6. Step 6: Final answer
   x = 19,913.98