Finding the Third Proportional to 12,647.81 and 18,901.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,647.81 : 18,901.69 = 18,901.69 : x
2. Step 2: Convert to fraction form
   12,647.81/18,901.69 = 18,901.69/x
3. Step 3: Cross multiply
   12,647.81x = 18,901.69 × 18,901.69
4. Step 4: Simplify right side
   12,647.81x = 357,273,790.35
5. Step 5: Solve for x
   x = 357,273,790.35/12,647.81
6. Step 6: Final answer
   x = 28,247.87