Finding the Third Proportional to 12,163.50 and 19,389.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,163.50 : 19,389.38 = 19,389.38 : x
2. Step 2: Convert to fraction form
   12,163.50/19,389.38 = 19,389.38/x
3. Step 3: Cross multiply
   12,163.50x = 19,389.38 × 19,389.38
4. Step 4: Simplify right side
   12,163.50x = 375,947,862.89
5. Step 5: Solve for x
   x = 375,947,862.89/12,163.50
6. Step 6: Final answer
   x = 30,907.87