Finding the Third Proportional to 2,211,020 and 3,315,880

Step by Step Solution

1. Step 1: Write the proportion equation
   2,211,020 : 3,315,880 = 3,315,880 : x
2. Step 2: Convert to fraction form
   2,211,020/3,315,880 = 3,315,880/x
3. Step 3: Cross multiply
   2,211,020x = 3,315,880 × 3,315,880
4. Step 4: Simplify right side
   2,211,020x = 10,995,060,174,400
5. Step 5: Solve for x
   x = 10,995,060,174,400/2,211,020
6. Step 6: Final answer
   x = 4,972,845.19