Finding the Third Proportional to 3,315,792 and 5,120,208

Step by Step Solution

1. Step 1: Write the proportion equation
   3,315,792 : 5,120,208 = 5,120,208 : x
2. Step 2: Convert to fraction form
   3,315,792/5,120,208 = 5,120,208/x
3. Step 3: Cross multiply
   3,315,792x = 5,120,208 × 5,120,208
4. Step 4: Simplify right side
   3,315,792x = 26,216,529,963,264
5. Step 5: Solve for x
   x = 26,216,529,963,264/3,315,792
6. Step 6: Final answer
   x = 7,906,566.50