Finding the Third Proportional to 1,556,721 and 3,419,910

Step by Step Solution

1. Step 1: Write the proportion equation
   1,556,721 : 3,419,910 = 3,419,910 : x
2. Step 2: Convert to fraction form
   1,556,721/3,419,910 = 3,419,910/x
3. Step 3: Cross multiply
   1,556,721x = 3,419,910 × 3,419,910
4. Step 4: Simplify right side
   1,556,721x = 11,695,784,408,100
5. Step 5: Solve for x
   x = 11,695,784,408,100/1,556,721
6. Step 6: Final answer
   x = 7,513,089.63