Finding the Third Proportional to 1,219,243 and 1,811,202

Step by Step Solution

1. Step 1: Write the proportion equation
   1,219,243 : 1,811,202 = 1,811,202 : x
2. Step 2: Convert to fraction form
   1,219,243/1,811,202 = 1,811,202/x
3. Step 3: Cross multiply
   1,219,243x = 1,811,202 × 1,811,202
4. Step 4: Simplify right side
   1,219,243x = 3,280,452,684,804
5. Step 5: Solve for x
   x = 3,280,452,684,804/1,219,243
6. Step 6: Final answer
   x = 2,690,565.12