Finding the Third Proportional to 1,787,778 and 3,909,774

Step by Step Solution

1. Step 1: Write the proportion equation
   1,787,778 : 3,909,774 = 3,909,774 : x
2. Step 2: Convert to fraction form
   1,787,778/3,909,774 = 3,909,774/x
3. Step 3: Cross multiply
   1,787,778x = 3,909,774 × 3,909,774
4. Step 4: Simplify right side
   1,787,778x = 15,286,332,731,076
5. Step 5: Solve for x
   x = 15,286,332,731,076/1,787,778
6. Step 6: Final answer
   x = 8,550,464.73