Finding the Third Proportional to 280,632 and 606,456

Step by Step Solution

1. Step 1: Write the proportion equation
   280,632 : 606,456 = 606,456 : x
2. Step 2: Convert to fraction form
   280,632/606,456 = 606,456/x
3. Step 3: Cross multiply
   280,632x = 606,456 × 606,456
4. Step 4: Simplify right side
   280,632x = 367,788,879,936
5. Step 5: Solve for x
   x = 367,788,879,936/280,632
6. Step 6: Final answer
   x = 1,310,573.56