Finding the Third Proportional to 9,401.70 and 20,648.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,401.70 : 20,648.78 = 20,648.78 : x
2. Step 2: Convert to fraction form
   9,401.70/20,648.78 = 20,648.78/x
3. Step 3: Cross multiply
   9,401.70x = 20,648.78 × 20,648.78
4. Step 4: Simplify right side
   9,401.70x = 426,372,005.79
5. Step 5: Solve for x
   x = 426,372,005.79/9,401.70
6. Step 6: Final answer
   x = 45,350.54