Finding the Third Proportional to 1,678,338 and 3,655,404

Step by Step Solution

1. Step 1: Write the proportion equation
   1,678,338 : 3,655,404 = 3,655,404 : x
2. Step 2: Convert to fraction form
   1,678,338/3,655,404 = 3,655,404/x
3. Step 3: Cross multiply
   1,678,338x = 3,655,404 × 3,655,404
4. Step 4: Simplify right side
   1,678,338x = 13,361,978,403,216
5. Step 5: Solve for x
   x = 13,361,978,403,216/1,678,338
6. Step 6: Final answer
   x = 7,961,434.71