Finding the Third Proportional to 208,016 and 490,880

Step by Step Solution

1. Step 1: Write the proportion equation
   208,016 : 490,880 = 490,880 : x
2. Step 2: Convert to fraction form
   208,016/490,880 = 490,880/x
3. Step 3: Cross multiply
   208,016x = 490,880 × 490,880
4. Step 4: Simplify right side
   208,016x = 240,963,174,400
5. Step 5: Solve for x
   x = 240,963,174,400/208,016
6. Step 6: Final answer
   x = 1,158,387.69