Finding the Third Proportional to 3,153,380 and 4,871,920

Step by Step Solution

1. Step 1: Write the proportion equation
   3,153,380 : 4,871,920 = 4,871,920 : x
2. Step 2: Convert to fraction form
   3,153,380/4,871,920 = 4,871,920/x
3. Step 3: Cross multiply
   3,153,380x = 4,871,920 × 4,871,920
4. Step 4: Simplify right side
   3,153,380x = 23,735,604,486,400
5. Step 5: Solve for x
   x = 23,735,604,486,400/3,153,380
6. Step 6: Final answer
   x = 7,527,035.91