Finding the Third Proportional to 18,404 and 39,723.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,404 : 39,723.50 = 39,723.50 : x
2. Step 2: Convert to fraction form
   18,404/39,723.50 = 39,723.50/x
3. Step 3: Cross multiply
   18,404x = 39,723.50 × 39,723.50
4. Step 4: Simplify right side
   18,404x = 1,577,956,452.25
5. Step 5: Solve for x
   x = 1,577,956,452.25/18,404
6. Step 6: Final answer
   x = 85,739.86