Finding the Third Proportional to 213,904 and 245,008

Step by Step Solution

1. Step 1: Write the proportion equation
   213,904 : 245,008 = 245,008 : x
2. Step 2: Convert to fraction form
   213,904/245,008 = 245,008/x
3. Step 3: Cross multiply
   213,904x = 245,008 × 245,008
4. Step 4: Simplify right side
   213,904x = 60,028,920,064
5. Step 5: Solve for x
   x = 60,028,920,064/213,904
6. Step 6: Final answer
   x = 280,634.86