Finding the Third Proportional to 5,177,963 and 7,766,945

Step by Step Solution

1. Step 1: Write the proportion equation
   5,177,963 : 7,766,945 = 7,766,945 : x
2. Step 2: Convert to fraction form
   5,177,963/7,766,945 = 7,766,945/x
3. Step 3: Cross multiply
   5,177,963x = 7,766,945 × 7,766,945
4. Step 4: Simplify right side
   5,177,963x = 60,325,434,633,025
5. Step 5: Solve for x
   x = 60,325,434,633,025/5,177,963
6. Step 6: Final answer
   x = 11,650,418.25