Finding the Third Proportional to 12,948 and 19,830

Step by Step Solution

1. Step 1: Write the proportion equation
   12,948 : 19,830 = 19,830 : x
2. Step 2: Convert to fraction form
   12,948/19,830 = 19,830/x
3. Step 3: Cross multiply
   12,948x = 19,830 × 19,830
4. Step 4: Simplify right side
   12,948x = 393,228,900
5. Step 5: Solve for x
   x = 393,228,900/12,948
6. Step 6: Final answer
   x = 30,369.86