Finding the Third Proportional to 4,747.78 and 10,390.22

Step by Step Solution

1. Step 1: Write the proportion equation
   4,747.78 : 10,390.22 = 10,390.22 : x
2. Step 2: Convert to fraction form
   4,747.78/10,390.22 = 10,390.22/x
3. Step 3: Cross multiply
   4,747.78x = 10,390.22 × 10,390.22
4. Step 4: Simplify right side
   4,747.78x = 107,956,645.67
5. Step 5: Solve for x
   x = 107,956,645.67/4,747.78
6. Step 6: Final answer
   x = 22,738.34