Finding the Third Proportional to 1,219,443 and 1,811,478

Step by Step Solution

1. Step 1: Write the proportion equation
   1,219,443 : 1,811,478 = 1,811,478 : x
2. Step 2: Convert to fraction form
   1,219,443/1,811,478 = 1,811,478/x
3. Step 3: Cross multiply
   1,219,443x = 1,811,478 × 1,811,478
4. Step 4: Simplify right side
   1,219,443x = 3,281,452,544,484
5. Step 5: Solve for x
   x = 3,281,452,544,484/1,219,443
6. Step 6: Final answer
   x = 2,690,943.77