Finding the Third Proportional to 1,821,384 and 3,991,232

Step by Step Solution

1. Step 1: Write the proportion equation
   1,821,384 : 3,991,232 = 3,991,232 : x
2. Step 2: Convert to fraction form
   1,821,384/3,991,232 = 3,991,232/x
3. Step 3: Cross multiply
   1,821,384x = 3,991,232 × 3,991,232
4. Step 4: Simplify right side
   1,821,384x = 15,929,932,877,824
5. Step 5: Solve for x
   x = 15,929,932,877,824/1,821,384
6. Step 6: Final answer
   x = 8,746,059.52