Finding the Third Proportional to 8,406.75 and 18,109.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,406.75 : 18,109.50 = 18,109.50 : x
2. Step 2: Convert to fraction form
   8,406.75/18,109.50 = 18,109.50/x
3. Step 3: Cross multiply
   8,406.75x = 18,109.50 × 18,109.50
4. Step 4: Simplify right side
   8,406.75x = 327,953,990.25
5. Step 5: Solve for x
   x = 327,953,990.25/8,406.75
6. Step 6: Final answer
   x = 39,010.79