Finding the Third Proportional to 9,731.39 and 19,869.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,731.39 : 19,869.05 = 19,869.05 : x
2. Step 2: Convert to fraction form
   9,731.39/19,869.05 = 19,869.05/x
3. Step 3: Cross multiply
   9,731.39x = 19,869.05 × 19,869.05
4. Step 4: Simplify right side
   9,731.39x = 394,779,023.72
5. Step 5: Solve for x
   x = 394,779,023.72/9,731.39
6. Step 6: Final answer
   x = 40,567.59