Finding the Third Proportional to 303,558 and 660,664.50

Step by Step Solution

1. Step 1: Write the proportion equation
   303,558 : 660,664.50 = 660,664.50 : x
2. Step 2: Convert to fraction form
   303,558/660,664.50 = 660,664.50/x
3. Step 3: Cross multiply
   303,558x = 660,664.50 × 660,664.50
4. Step 4: Simplify right side
   303,558x = 436,477,581,560.25
5. Step 5: Solve for x
   x = 436,477,581,560.25/303,558
6. Step 6: Final answer
   x = 1,437,872.11