Finding the Third Proportional to 7,118.72 and 10,404.28

Step by Step Solution

1. Step 1: Write the proportion equation
   7,118.72 : 10,404.28 = 10,404.28 : x
2. Step 2: Convert to fraction form
   7,118.72/10,404.28 = 10,404.28/x
3. Step 3: Cross multiply
   7,118.72x = 10,404.28 × 10,404.28
4. Step 4: Simplify right side
   7,118.72x = 108,249,068.33
5. Step 5: Solve for x
   x = 108,249,068.33/7,118.72
6. Step 6: Final answer
   x = 15,206.26