Finding the Third Proportional to 12,878 and 19,927

Step by Step Solution

1. Step 1: Write the proportion equation
   12,878 : 19,927 = 19,927 : x
2. Step 2: Convert to fraction form
   12,878/19,927 = 19,927/x
3. Step 3: Cross multiply
   12,878x = 19,927 × 19,927
4. Step 4: Simplify right side
   12,878x = 397,085,329
5. Step 5: Solve for x
   x = 397,085,329/12,878
6. Step 6: Final answer
   x = 30,834.39