Finding the Third Proportional to 213,906 and 245,010

Step by Step Solution

1. Step 1: Write the proportion equation
   213,906 : 245,010 = 245,010 : x
2. Step 2: Convert to fraction form
   213,906/245,010 = 245,010/x
3. Step 3: Cross multiply
   213,906x = 245,010 × 245,010
4. Step 4: Simplify right side
   213,906x = 60,029,900,100
5. Step 5: Solve for x
   x = 60,029,900,100/213,906
6. Step 6: Final answer
   x = 280,636.82