Finding the Third Proportional to 303,540 and 660,628.50

Step by Step Solution

1. Step 1: Write the proportion equation
   303,540 : 660,628.50 = 660,628.50 : x
2. Step 2: Convert to fraction form
   303,540/660,628.50 = 660,628.50/x
3. Step 3: Cross multiply
   303,540x = 660,628.50 × 660,628.50
4. Step 4: Simplify right side
   303,540x = 436,430,015,012.25
5. Step 5: Solve for x
   x = 436,430,015,012.25/303,540
6. Step 6: Final answer
   x = 1,437,800.67