Finding the Third Proportional to 12,454.50 and 18,505.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,454.50 : 18,505.31 = 18,505.31 : x
2. Step 2: Convert to fraction form
   12,454.50/18,505.31 = 18,505.31/x
3. Step 3: Cross multiply
   12,454.50x = 18,505.31 × 18,505.31
4. Step 4: Simplify right side
   12,454.50x = 342,446,590.72
5. Step 5: Solve for x
   x = 342,446,590.72/12,454.50
6. Step 6: Final answer
   x = 27,495.81