Finding the Third Proportional to 603,039 and 818,980.50

Step by Step Solution

1. Step 1: Write the proportion equation
   603,039 : 818,980.50 = 818,980.50 : x
2. Step 2: Convert to fraction form
   603,039/818,980.50 = 818,980.50/x
3. Step 3: Cross multiply
   603,039x = 818,980.50 × 818,980.50
4. Step 4: Simplify right side
   603,039x = 670,729,059,380.25
5. Step 5: Solve for x
   x = 670,729,059,380.25/603,039
6. Step 6: Final answer
   x = 1,112,248.23