Finding the Third Proportional to 6,781,311 and 10,171,980

Step by Step Solution

1. Step 1: Write the proportion equation
   6,781,311 : 10,171,980 = 10,171,980 : x
2. Step 2: Convert to fraction form
   6,781,311/10,171,980 = 10,171,980/x
3. Step 3: Cross multiply
   6,781,311x = 10,171,980 × 10,171,980
4. Step 4: Simplify right side
   6,781,311x = 103,469,177,120,400
5. Step 5: Solve for x
   x = 103,469,177,120,400/6,781,311
6. Step 6: Final answer
   x = 15,257,990.25