Finding the Third Proportional to 254,448 and 555,066

Step by Step Solution

1. Step 1: Write the proportion equation
   254,448 : 555,066 = 555,066 : x
2. Step 2: Convert to fraction form
   254,448/555,066 = 555,066/x
3. Step 3: Cross multiply
   254,448x = 555,066 × 555,066
4. Step 4: Simplify right side
   254,448x = 308,098,264,356
5. Step 5: Solve for x
   x = 308,098,264,356/254,448
6. Step 6: Final answer
   x = 1,210,849.62