Finding the Third Proportional to 280,485 and 617,044.50

Step by Step Solution

1. Step 1: Write the proportion equation
   280,485 : 617,044.50 = 617,044.50 : x
2. Step 2: Convert to fraction form
   280,485/617,044.50 = 617,044.50/x
3. Step 3: Cross multiply
   280,485x = 617,044.50 × 617,044.50
4. Step 4: Simplify right side
   280,485x = 380,743,914,980.25
5. Step 5: Solve for x
   x = 380,743,914,980.25/280,485
6. Step 6: Final answer
   x = 1,357,448.40