Finding the Third Proportional to 279,540 and 603,337.50

Step by Step Solution

1. Step 1: Write the proportion equation
   279,540 : 603,337.50 = 603,337.50 : x
2. Step 2: Convert to fraction form
   279,540/603,337.50 = 603,337.50/x
3. Step 3: Cross multiply
   279,540x = 603,337.50 × 603,337.50
4. Step 4: Simplify right side
   279,540x = 364,016,138,906.25
5. Step 5: Solve for x
   x = 364,016,138,906.25/279,540
6. Step 6: Final answer
   x = 1,302,196.96