Finding the Third Proportional to 1,556,438 and 3,408,121

Step by Step Solution

1. Step 1: Write the proportion equation
   1,556,438 : 3,408,121 = 3,408,121 : x
2. Step 2: Convert to fraction form
   1,556,438/3,408,121 = 3,408,121/x
3. Step 3: Cross multiply
   1,556,438x = 3,408,121 × 3,408,121
4. Step 4: Simplify right side
   1,556,438x = 11,615,288,750,641
5. Step 5: Solve for x
   x = 11,615,288,750,641/1,556,438
6. Step 6: Final answer
   x = 7,462,737.84