Finding the Third Proportional to 10,887 and 12,291

Step by Step Solution

1. Step 1: Write the proportion equation
   10,887 : 12,291 = 12,291 : x
2. Step 2: Convert to fraction form
   10,887/12,291 = 12,291/x
3. Step 3: Cross multiply
   10,887x = 12,291 × 12,291
4. Step 4: Simplify right side
   10,887x = 151,068,681
5. Step 5: Solve for x
   x = 151,068,681/10,887
6. Step 6: Final answer
   x = 13,876.06