Finding the Third Proportional to 8,553.94 and 12,585.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,553.94 : 12,585.38 = 12,585.38 : x
2. Step 2: Convert to fraction form
   8,553.94/12,585.38 = 12,585.38/x
3. Step 3: Cross multiply
   8,553.94x = 12,585.38 × 12,585.38
4. Step 4: Simplify right side
   8,553.94x = 158,391,663.89
5. Step 5: Solve for x
   x = 158,391,663.89/8,553.94
6. Step 6: Final answer
   x = 18,516.81