Finding the Third Proportional to 303,151.50 and 441,391.50

Step by Step Solution

1. Step 1: Write the proportion equation
   303,151.50 : 441,391.50 = 441,391.50 : x
2. Step 2: Convert to fraction form
   303,151.50/441,391.50 = 441,391.50/x
3. Step 3: Cross multiply
   303,151.50x = 441,391.50 × 441,391.50
4. Step 4: Simplify right side
   303,151.50x = 194,826,456,272.25
5. Step 5: Solve for x
   x = 194,826,456,272.25/303,151.50
6. Step 6: Final answer
   x = 642,670.27