Finding the Third Proportional to 1,253,556 and 1,909,726

Step by Step Solution

1. Step 1: Write the proportion equation
   1,253,556 : 1,909,726 = 1,909,726 : x
2. Step 2: Convert to fraction form
   1,253,556/1,909,726 = 1,909,726/x
3. Step 3: Cross multiply
   1,253,556x = 1,909,726 × 1,909,726
4. Step 4: Simplify right side
   1,253,556x = 3,647,053,395,076
5. Step 5: Solve for x
   x = 3,647,053,395,076/1,253,556
6. Step 6: Final answer
   x = 2,909,366.15