Finding the Third Proportional to 6,912.75 and 10,721.25

Step by Step Solution

1. Step 1: Write the proportion equation
   6,912.75 : 10,721.25 = 10,721.25 : x
2. Step 2: Convert to fraction form
   6,912.75/10,721.25 = 10,721.25/x
3. Step 3: Cross multiply
   6,912.75x = 10,721.25 × 10,721.25
4. Step 4: Simplify right side
   6,912.75x = 114,945,201.56
5. Step 5: Solve for x
   x = 114,945,201.56/6,912.75
6. Step 6: Final answer
   x = 16,628.00