Finding the Third Proportional to 12,862 and 19,906

Step by Step Solution

1. Step 1: Write the proportion equation
   12,862 : 19,906 = 19,906 : x
2. Step 2: Convert to fraction form
   12,862/19,906 = 19,906/x
3. Step 3: Cross multiply
   12,862x = 19,906 × 19,906
4. Step 4: Simplify right side
   12,862x = 396,248,836
5. Step 5: Solve for x
   x = 396,248,836/12,862
6. Step 6: Final answer
   x = 30,807.72