Finding the Third Proportional to 1,821,994 and 3,987,212

Step by Step Solution

1. Step 1: Write the proportion equation
   1,821,994 : 3,987,212 = 3,987,212 : x
2. Step 2: Convert to fraction form
   1,821,994/3,987,212 = 3,987,212/x
3. Step 3: Cross multiply
   1,821,994x = 3,987,212 × 3,987,212
4. Step 4: Simplify right side
   1,821,994x = 15,897,859,532,944
5. Step 5: Solve for x
   x = 15,897,859,532,944/1,821,994
6. Step 6: Final answer
   x = 8,725,527.93