Finding the Third Proportional to 4,311,738 and 7,185,780

Step by Step Solution

1. Step 1: Write the proportion equation
   4,311,738 : 7,185,780 = 7,185,780 : x
2. Step 2: Convert to fraction form
   4,311,738/7,185,780 = 7,185,780/x
3. Step 3: Cross multiply
   4,311,738x = 7,185,780 × 7,185,780
4. Step 4: Simplify right side
   4,311,738x = 51,635,434,208,400
5. Step 5: Solve for x
   x = 51,635,434,208,400/4,311,738
6. Step 6: Final answer
   x = 11,975,550.05