Finding the Third Proportional to 3,400,780 and 7,185,446

Step by Step Solution

1. Step 1: Write the proportion equation
   3,400,780 : 7,185,446 = 7,185,446 : x
2. Step 2: Convert to fraction form
   3,400,780/7,185,446 = 7,185,446/x
3. Step 3: Cross multiply
   3,400,780x = 7,185,446 × 7,185,446
4. Step 4: Simplify right side
   3,400,780x = 51,630,634,218,916
5. Step 5: Solve for x
   x = 51,630,634,218,916/3,400,780
6. Step 6: Final answer
   x = 15,181,997.72