Finding the Third Proportional to 268,139.25 and 554,838

Step by Step Solution

1. Step 1: Write the proportion equation
   268,139.25 : 554,838 = 554,838 : x
2. Step 2: Convert to fraction form
   268,139.25/554,838 = 554,838/x
3. Step 3: Cross multiply
   268,139.25x = 554,838 × 554,838
4. Step 4: Simplify right side
   268,139.25x = 307,845,206,244
5. Step 5: Solve for x
   x = 307,845,206,244/268,139.25
6. Step 6: Final answer
   x = 1,148,079.61