Finding the Third Proportional to 254,112 and 555,616

Step by Step Solution

1. Step 1: Write the proportion equation
   254,112 : 555,616 = 555,616 : x
2. Step 2: Convert to fraction form
   254,112/555,616 = 555,616/x
3. Step 3: Cross multiply
   254,112x = 555,616 × 555,616
4. Step 4: Simplify right side
   254,112x = 308,709,139,456
5. Step 5: Solve for x
   x = 308,709,139,456/254,112
6. Step 6: Final answer
   x = 1,214,854.63