Finding the Third Proportional to 17,308.69 and 19,860.19

Step by Step Solution

1. Step 1: Write the proportion equation
   17,308.69 : 19,860.19 = 19,860.19 : x
2. Step 2: Convert to fraction form
   17,308.69/19,860.19 = 19,860.19/x
3. Step 3: Cross multiply
   17,308.69x = 19,860.19 × 19,860.19
4. Step 4: Simplify right side
   17,308.69x = 394,427,047.54
5. Step 5: Solve for x
   x = 394,427,047.54/17,308.69
6. Step 6: Final answer
   x = 22,787.81