Finding the Third Proportional to 4,881.94 and 7,771.78

Step by Step Solution

1. Step 1: Write the proportion equation
   4,881.94 : 7,771.78 = 7,771.78 : x
2. Step 2: Convert to fraction form
   4,881.94/7,771.78 = 7,771.78/x
3. Step 3: Cross multiply
   4,881.94x = 7,771.78 × 7,771.78
4. Step 4: Simplify right side
   4,881.94x = 60,400,583.80
5. Step 5: Solve for x
   x = 60,400,583.80/4,881.94
6. Step 6: Final answer
   x = 12,372.26