Finding the Third Proportional to 1,401,556 and 2,130,678

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401,556 : 2,130,678 = 2,130,678 : x
2. Step 2: Convert to fraction form
   1,401,556/2,130,678 = 2,130,678/x
3. Step 3: Cross multiply
   1,401,556x = 2,130,678 × 2,130,678
4. Step 4: Simplify right side
   1,401,556x = 4,539,788,739,684
5. Step 5: Solve for x
   x = 4,539,788,739,684/1,401,556
6. Step 6: Final answer
   x = 3,239,106.21