Finding the Third Proportional to 8,300 and 12,451

Step by Step Solution

1. Step 1: Write the proportion equation
   8,300 : 12,451 = 12,451 : x
2. Step 2: Convert to fraction form
   8,300/12,451 = 12,451/x
3. Step 3: Cross multiply
   8,300x = 12,451 × 12,451
4. Step 4: Simplify right side
   8,300x = 155,027,401
5. Step 5: Solve for x
   x = 155,027,401/8,300
6. Step 6: Final answer
   x = 18,678.00