Finding the Third Proportional to 13,831 and 28,687

Step by Step Solution

1. Step 1: Write the proportion equation
   13,831 : 28,687 = 28,687 : x
2. Step 2: Convert to fraction form
   13,831/28,687 = 28,687/x
3. Step 3: Cross multiply
   13,831x = 28,687 × 28,687
4. Step 4: Simplify right side
   13,831x = 822,943,969
5. Step 5: Solve for x
   x = 822,943,969/13,831
6. Step 6: Final answer
   x = 59,499.96