Finding the Third Proportional to 5,177,912 and 7,766,868

Step by Step Solution

1. Step 1: Write the proportion equation
   5,177,912 : 7,766,868 = 7,766,868 : x
2. Step 2: Convert to fraction form
   5,177,912/7,766,868 = 7,766,868/x
3. Step 3: Cross multiply
   5,177,912x = 7,766,868 × 7,766,868
4. Step 4: Simplify right side
   5,177,912x = 60,324,238,529,424
5. Step 5: Solve for x
   x = 60,324,238,529,424/5,177,912
6. Step 6: Final answer
   x = 11,650,302