Finding the Third Proportional to 10,251 and 11,139

Step by Step Solution

1. Step 1: Write the proportion equation
   10,251 : 11,139 = 11,139 : x
2. Step 2: Convert to fraction form
   10,251/11,139 = 11,139/x
3. Step 3: Cross multiply
   10,251x = 11,139 × 11,139
4. Step 4: Simplify right side
   10,251x = 124,077,321
5. Step 5: Solve for x
   x = 124,077,321/10,251
6. Step 6: Final answer
   x = 12,103.92