Finding the Third Proportional to 1,678,840 and 3,625,718

Step by Step Solution

1. Step 1: Write the proportion equation
   1,678,840 : 3,625,718 = 3,625,718 : x
2. Step 2: Convert to fraction form
   1,678,840/3,625,718 = 3,625,718/x
3. Step 3: Cross multiply
   1,678,840x = 3,625,718 × 3,625,718
4. Step 4: Simplify right side
   1,678,840x = 13,145,831,015,524
5. Step 5: Solve for x
   x = 13,145,831,015,524/1,678,840
6. Step 6: Final answer
   x = 7,830,306.05