Finding the Third Proportional to 1,219,245 and 1,811,205

Step by Step Solution

1. Step 1: Write the proportion equation
   1,219,245 : 1,811,205 = 1,811,205 : x
2. Step 2: Convert to fraction form
   1,219,245/1,811,205 = 1,811,205/x
3. Step 3: Cross multiply
   1,219,245x = 1,811,205 × 1,811,205
4. Step 4: Simplify right side
   1,219,245x = 3,280,463,552,025
5. Step 5: Solve for x
   x = 3,280,463,552,025/1,219,245
6. Step 6: Final answer
   x = 2,690,569.62