Finding the Third Proportional to 278,584 and 601,500

Step by Step Solution

1. Step 1: Write the proportion equation
   278,584 : 601,500 = 601,500 : x
2. Step 2: Convert to fraction form
   278,584/601,500 = 601,500/x
3. Step 3: Cross multiply
   278,584x = 601,500 × 601,500
4. Step 4: Simplify right side
   278,584x = 361,802,250,000
5. Step 5: Solve for x
   x = 361,802,250,000/278,584
6. Step 6: Final answer
   x = 1,298,718.70