Finding the Third Proportional to 6,917.91 and 10,979.30

Step by Step Solution

1. Step 1: Write the proportion equation
   6,917.91 : 10,979.30 = 10,979.30 : x
2. Step 2: Convert to fraction form
   6,917.91/10,979.30 = 10,979.30/x
3. Step 3: Cross multiply
   6,917.91x = 10,979.30 × 10,979.30
4. Step 4: Simplify right side
   6,917.91x = 120,544,959.87
5. Step 5: Solve for x
   x = 120,544,959.87/6,917.91
6. Step 6: Final answer
   x = 17,425.06