Finding the Third Proportional to 8,540.50 and 18,009.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,540.50 : 18,009.50 = 18,009.50 : x
2. Step 2: Convert to fraction form
   8,540.50/18,009.50 = 18,009.50/x
3. Step 3: Cross multiply
   8,540.50x = 18,009.50 × 18,009.50
4. Step 4: Simplify right side
   8,540.50x = 324,342,090.25
5. Step 5: Solve for x
   x = 324,342,090.25/8,540.50
6. Step 6: Final answer
   x = 37,976.94