Finding the Third Proportional to 6,870 and 16,716

Step by Step Solution

1. Step 1: Write the proportion equation
   6,870 : 16,716 = 16,716 : x
2. Step 2: Convert to fraction form
   6,870/16,716 = 16,716/x
3. Step 3: Cross multiply
   6,870x = 16,716 × 16,716
4. Step 4: Simplify right side
   6,870x = 279,424,656
5. Step 5: Solve for x
   x = 279,424,656/6,870
6. Step 6: Final answer
   x = 40,673.17