Finding the Third Proportional to 19,198.69 and 39,930.47

Step by Step Solution

1. Step 1: Write the proportion equation
   19,198.69 : 39,930.47 = 39,930.47 : x
2. Step 2: Convert to fraction form
   19,198.69/39,930.47 = 39,930.47/x
3. Step 3: Cross multiply
   19,198.69x = 39,930.47 × 39,930.47
4. Step 4: Simplify right side
   19,198.69x = 1,594,442,334.59
5. Step 5: Solve for x
   x = 1,594,442,334.59/19,198.69
6. Step 6: Final answer
   x = 83,049.55