Finding the Third Proportional to 3,211,922 and 7,132,420

Step by Step Solution

1. Step 1: Write the proportion equation
   3,211,922 : 7,132,420 = 7,132,420 : x
2. Step 2: Convert to fraction form
   3,211,922/7,132,420 = 7,132,420/x
3. Step 3: Cross multiply
   3,211,922x = 7,132,420 × 7,132,420
4. Step 4: Simplify right side
   3,211,922x = 50,871,415,056,400
5. Step 5: Solve for x
   x = 50,871,415,056,400/3,211,922
6. Step 6: Final answer
   x = 15,838,309.60