Finding the Third Proportional to 555,858 and 1,212,084

Step by Step Solution

1. Step 1: Write the proportion equation
   555,858 : 1,212,084 = 1,212,084 : x
2. Step 2: Convert to fraction form
   555,858/1,212,084 = 1,212,084/x
3. Step 3: Cross multiply
   555,858x = 1,212,084 × 1,212,084
4. Step 4: Simplify right side
   555,858x = 1,469,147,623,056
5. Step 5: Solve for x
   x = 1,469,147,623,056/555,858
6. Step 6: Final answer
   x = 2,643,026.86