Finding the Third Proportional to 12,387 and 30,549

Step by Step Solution

1. Step 1: Write the proportion equation
   12,387 : 30,549 = 30,549 : x
2. Step 2: Convert to fraction form
   12,387/30,549 = 30,549/x
3. Step 3: Cross multiply
   12,387x = 30,549 × 30,549
4. Step 4: Simplify right side
   12,387x = 933,241,401
5. Step 5: Solve for x
   x = 933,241,401/12,387
6. Step 6: Final answer
   x = 75,340.39