Finding the Third Proportional to 1,214,558 and 1,815,145

Step by Step Solution

1. Step 1: Write the proportion equation
   1,214,558 : 1,815,145 = 1,815,145 : x
2. Step 2: Convert to fraction form
   1,214,558/1,815,145 = 1,815,145/x
3. Step 3: Cross multiply
   1,214,558x = 1,815,145 × 1,815,145
4. Step 4: Simplify right side
   1,214,558x = 3,294,751,371,025
5. Step 5: Solve for x
   x = 3,294,751,371,025/1,214,558
6. Step 6: Final answer
   x = 2,712,716.37