Finding the Third Proportional to 5,274 and 12,339

Step by Step Solution

1. Step 1: Write the proportion equation
   5,274 : 12,339 = 12,339 : x
2. Step 2: Convert to fraction form
   5,274/12,339 = 12,339/x
3. Step 3: Cross multiply
   5,274x = 12,339 × 12,339
4. Step 4: Simplify right side
   5,274x = 152,250,921
5. Step 5: Solve for x
   x = 152,250,921/5,274
6. Step 6: Final answer
   x = 28,868.21