Finding the Third Proportional to 280,147.50 and 599,661

Step by Step Solution

1. Step 1: Write the proportion equation
   280,147.50 : 599,661 = 599,661 : x
2. Step 2: Convert to fraction form
   280,147.50/599,661 = 599,661/x
3. Step 3: Cross multiply
   280,147.50x = 599,661 × 599,661
4. Step 4: Simplify right side
   280,147.50x = 359,593,314,921
5. Step 5: Solve for x
   x = 359,593,314,921/280,147.50
6. Step 6: Final answer
   x = 1,283,585.66