Finding the Third Proportional to 1,071,440 and 2,231,636

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071,440 : 2,231,636 = 2,231,636 : x
2. Step 2: Convert to fraction form
   1,071,440/2,231,636 = 2,231,636/x
3. Step 3: Cross multiply
   1,071,440x = 2,231,636 × 2,231,636
4. Step 4: Simplify right side
   1,071,440x = 4,980,199,236,496
5. Step 5: Solve for x
   x = 4,980,199,236,496/1,071,440
6. Step 6: Final answer
   x = 4,648,136.37