Finding the Third Proportional to 546,648 and 1,200,918

Step by Step Solution

1. Step 1: Write the proportion equation
   546,648 : 1,200,918 = 1,200,918 : x
2. Step 2: Convert to fraction form
   546,648/1,200,918 = 1,200,918/x
3. Step 3: Cross multiply
   546,648x = 1,200,918 × 1,200,918
4. Step 4: Simplify right side
   546,648x = 1,442,204,042,724
5. Step 5: Solve for x
   x = 1,442,204,042,724/546,648
6. Step 6: Final answer
   x = 2,638,268.21