Finding the Third Proportional to 12,718 and 19,005

Step by Step Solution

1. Step 1: Write the proportion equation
   12,718 : 19,005 = 19,005 : x
2. Step 2: Convert to fraction form
   12,718/19,005 = 19,005/x
3. Step 3: Cross multiply
   12,718x = 19,005 × 19,005
4. Step 4: Simplify right side
   12,718x = 361,190,025
5. Step 5: Solve for x
   x = 361,190,025/12,718
6. Step 6: Final answer
   x = 28,399.91