Finding the Third Proportional to 279,508.50 and 603,513

Step by Step Solution

1. Step 1: Write the proportion equation
   279,508.50 : 603,513 = 603,513 : x
2. Step 2: Convert to fraction form
   279,508.50/603,513 = 603,513/x
3. Step 3: Cross multiply
   279,508.50x = 603,513 × 603,513
4. Step 4: Simplify right side
   279,508.50x = 364,227,941,169
5. Step 5: Solve for x
   x = 364,227,941,169/279,508.50
6. Step 6: Final answer
   x = 1,303,101.48