Finding the Third Proportional to 280,500 and 617,082

Step by Step Solution

1. Step 1: Write the proportion equation
   280,500 : 617,082 = 617,082 : x
2. Step 2: Convert to fraction form
   280,500/617,082 = 617,082/x
3. Step 3: Cross multiply
   280,500x = 617,082 × 617,082
4. Step 4: Simplify right side
   280,500x = 380,790,194,724
5. Step 5: Solve for x
   x = 380,790,194,724/280,500
6. Step 6: Final answer
   x = 1,357,540.80