Finding the Third Proportional to 7,218 and 10,959

Step by Step Solution

1. Step 1: Write the proportion equation
   7,218 : 10,959 = 10,959 : x
2. Step 2: Convert to fraction form
   7,218/10,959 = 10,959/x
3. Step 3: Cross multiply
   7,218x = 10,959 × 10,959
4. Step 4: Simplify right side
   7,218x = 120,099,681
5. Step 5: Solve for x
   x = 120,099,681/7,218
6. Step 6: Final answer
   x = 16,638.91