Finding the Third Proportional to 1,821,729 and 3,997,740

Step by Step Solution

1. Step 1: Write the proportion equation
   1,821,729 : 3,997,740 = 3,997,740 : x
2. Step 2: Convert to fraction form
   1,821,729/3,997,740 = 3,997,740/x
3. Step 3: Cross multiply
   1,821,729x = 3,997,740 × 3,997,740
4. Step 4: Simplify right side
   1,821,729x = 15,981,925,107,600
5. Step 5: Solve for x
   x = 15,981,925,107,600/1,821,729
6. Step 6: Final answer
   x = 8,772,943.24