Finding the Third Proportional to 1,860,800 and 3,947,440

Step by Step Solution

1. Step 1: Write the proportion equation
   1,860,800 : 3,947,440 = 3,947,440 : x
2. Step 2: Convert to fraction form
   1,860,800/3,947,440 = 3,947,440/x
3. Step 3: Cross multiply
   1,860,800x = 3,947,440 × 3,947,440
4. Step 4: Simplify right side
   1,860,800x = 15,582,282,553,600
5. Step 5: Solve for x
   x = 15,582,282,553,600/1,860,800
6. Step 6: Final answer
   x = 8,373,969.56