Finding the Third Proportional to 12,672.07 and 18,961.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,672.07 : 18,961.59 = 18,961.59 : x
2. Step 2: Convert to fraction form
   12,672.07/18,961.59 = 18,961.59/x
3. Step 3: Cross multiply
   12,672.07x = 18,961.59 × 18,961.59
4. Step 4: Simplify right side
   12,672.07x = 359,542,037.54
5. Step 5: Solve for x
   x = 359,542,037.54/12,672.07
6. Step 6: Final answer
   x = 28,372.79