Finding the Third Proportional to 1,863,404 and 3,970,840

Step by Step Solution

1. Step 1: Write the proportion equation
   1,863,404 : 3,970,840 = 3,970,840 : x
2. Step 2: Convert to fraction form
   1,863,404/3,970,840 = 3,970,840/x
3. Step 3: Cross multiply
   1,863,404x = 3,970,840 × 3,970,840
4. Step 4: Simplify right side
   1,863,404x = 15,767,570,305,600
5. Step 5: Solve for x
   x = 15,767,570,305,600/1,863,404
6. Step 6: Final answer
   x = 8,461,702.51