Finding the Third Proportional to 8,892.38 and 12,879.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,892.38 : 12,879.56 = 12,879.56 : x
2. Step 2: Convert to fraction form
   8,892.38/12,879.56 = 12,879.56/x
3. Step 3: Cross multiply
   8,892.38x = 12,879.56 × 12,879.56
4. Step 4: Simplify right side
   8,892.38x = 165,883,130.19
5. Step 5: Solve for x
   x = 165,883,130.19/8,892.38
6. Step 6: Final answer
   x = 18,654.54