Finding the Third Proportional to 8,484 and 12,086

Step by Step Solution

1. Step 1: Write the proportion equation
   8,484 : 12,086 = 12,086 : x
2. Step 2: Convert to fraction form
   8,484/12,086 = 12,086/x
3. Step 3: Cross multiply
   8,484x = 12,086 × 12,086
4. Step 4: Simplify right side
   8,484x = 146,071,396
5. Step 5: Solve for x
   x = 146,071,396/8,484
6. Step 6: Final answer
   x = 17,217.28