Finding the Third Proportional to 208,128 and 490,752

Step by Step Solution

1. Step 1: Write the proportion equation
   208,128 : 490,752 = 490,752 : x
2. Step 2: Convert to fraction form
   208,128/490,752 = 490,752/x
3. Step 3: Cross multiply
   208,128x = 490,752 × 490,752
4. Step 4: Simplify right side
   208,128x = 240,837,525,504
5. Step 5: Solve for x
   x = 240,837,525,504/208,128
6. Step 6: Final answer
   x = 1,157,160.62