Finding the Third Proportional to 1,556,442 and 3,408,128

Step by Step Solution

1. Step 1: Write the proportion equation
   1,556,442 : 3,408,128 = 3,408,128 : x
2. Step 2: Convert to fraction form
   1,556,442/3,408,128 = 3,408,128/x
3. Step 3: Cross multiply
   1,556,442x = 3,408,128 × 3,408,128
4. Step 4: Simplify right side
   1,556,442x = 11,615,336,464,384
5. Step 5: Solve for x
   x = 11,615,336,464,384/1,556,442
6. Step 6: Final answer
   x = 7,462,749.31