Finding the Third Proportional to 5,177,961 and 7,766,942

Step by Step Solution

1. Step 1: Write the proportion equation
   5,177,961 : 7,766,942 = 7,766,942 : x
2. Step 2: Convert to fraction form
   5,177,961/7,766,942 = 7,766,942/x
3. Step 3: Cross multiply
   5,177,961x = 7,766,942 × 7,766,942
4. Step 4: Simplify right side
   5,177,961x = 60,325,388,031,364
5. Step 5: Solve for x
   x = 60,325,388,031,364/5,177,961
6. Step 6: Final answer
   x = 11,650,413.75