Finding the Third Proportional to 6,606 and 13,390

Step by Step Solution

1. Step 1: Write the proportion equation
   6,606 : 13,390 = 13,390 : x
2. Step 2: Convert to fraction form
   6,606/13,390 = 13,390/x
3. Step 3: Cross multiply
   6,606x = 13,390 × 13,390
4. Step 4: Simplify right side
   6,606x = 179,292,100
5. Step 5: Solve for x
   x = 179,292,100/6,606
6. Step 6: Final answer
   x = 27,140.80