Finding the Third Proportional to 254,988 and 555,012

Step by Step Solution

1. Step 1: Write the proportion equation
   254,988 : 555,012 = 555,012 : x
2. Step 2: Convert to fraction form
   254,988/555,012 = 555,012/x
3. Step 3: Cross multiply
   254,988x = 555,012 × 555,012
4. Step 4: Simplify right side
   254,988x = 308,038,320,144
5. Step 5: Solve for x
   x = 308,038,320,144/254,988
6. Step 6: Final answer
   x = 1,208,050.26