Finding the Third Proportional to 1,728,556 and 2,616,684

Step by Step Solution

1. Step 1: Write the proportion equation
   1,728,556 : 2,616,684 = 2,616,684 : x
2. Step 2: Convert to fraction form
   1,728,556/2,616,684 = 2,616,684/x
3. Step 3: Cross multiply
   1,728,556x = 2,616,684 × 2,616,684
4. Step 4: Simplify right side
   1,728,556x = 6,847,035,155,856
5. Step 5: Solve for x
   x = 6,847,035,155,856/1,728,556
6. Step 6: Final answer
   x = 3,961,130.07