Finding the Third Proportional to 641,040 and 1,367,868

Step by Step Solution

1. Step 1: Write the proportion equation
   641,040 : 1,367,868 = 1,367,868 : x
2. Step 2: Convert to fraction form
   641,040/1,367,868 = 1,367,868/x
3. Step 3: Cross multiply
   641,040x = 1,367,868 × 1,367,868
4. Step 4: Simplify right side
   641,040x = 1,871,062,865,424
5. Step 5: Solve for x
   x = 1,871,062,865,424/641,040
6. Step 6: Final answer
   x = 2,918,792.69