Finding the Third Proportional to 6,510 and 13,666

Step by Step Solution

1. Step 1: Write the proportion equation
   6,510 : 13,666 = 13,666 : x
2. Step 2: Convert to fraction form
   6,510/13,666 = 13,666/x
3. Step 3: Cross multiply
   6,510x = 13,666 × 13,666
4. Step 4: Simplify right side
   6,510x = 186,759,556
5. Step 5: Solve for x
   x = 186,759,556/6,510
6. Step 6: Final answer
   x = 28,688.10