Finding the Third Proportional to 663,855 and 1,440,111

Step by Step Solution

1. Step 1: Write the proportion equation
   663,855 : 1,440,111 = 1,440,111 : x
2. Step 2: Convert to fraction form
   663,855/1,440,111 = 1,440,111/x
3. Step 3: Cross multiply
   663,855x = 1,440,111 × 1,440,111
4. Step 4: Simplify right side
   663,855x = 2,073,919,692,321
5. Step 5: Solve for x
   x = 2,073,919,692,321/663,855
6. Step 6: Final answer
   x = 3,124,055.24