Finding the Third Proportional to 280,863.50 and 601,255

Step by Step Solution

1. Step 1: Write the proportion equation
   280,863.50 : 601,255 = 601,255 : x
2. Step 2: Convert to fraction form
   280,863.50/601,255 = 601,255/x
3. Step 3: Cross multiply
   280,863.50x = 601,255 × 601,255
4. Step 4: Simplify right side
   280,863.50x = 361,507,575,025
5. Step 5: Solve for x
   x = 361,507,575,025/280,863.50
6. Step 6: Final answer
   x = 1,287,129.07