Finding the Third Proportional to 859,398 and 1,871,724

Step by Step Solution

1. Step 1: Write the proportion equation
   859,398 : 1,871,724 = 1,871,724 : x
2. Step 2: Convert to fraction form
   859,398/1,871,724 = 1,871,724/x
3. Step 3: Cross multiply
   859,398x = 1,871,724 × 1,871,724
4. Step 4: Simplify right side
   859,398x = 3,503,350,732,176
5. Step 5: Solve for x
   x = 3,503,350,732,176/859,398
6. Step 6: Final answer
   x = 4,076,517.20