Finding the Third Proportional to 555,456 and 1,211,262

Step by Step Solution

1. Step 1: Write the proportion equation
   555,456 : 1,211,262 = 1,211,262 : x
2. Step 2: Convert to fraction form
   555,456/1,211,262 = 1,211,262/x
3. Step 3: Cross multiply
   555,456x = 1,211,262 × 1,211,262
4. Step 4: Simplify right side
   555,456x = 1,467,155,632,644
5. Step 5: Solve for x
   x = 1,467,155,632,644/555,456
6. Step 6: Final answer
   x = 2,641,353.47