Finding the Third Proportional to 303,348 and 660,499.50

Step by Step Solution

1. Step 1: Write the proportion equation
   303,348 : 660,499.50 = 660,499.50 : x
2. Step 2: Convert to fraction form
   303,348/660,499.50 = 660,499.50/x
3. Step 3: Cross multiply
   303,348x = 660,499.50 × 660,499.50
4. Step 4: Simplify right side
   303,348x = 436,259,589,500.25
5. Step 5: Solve for x
   x = 436,259,589,500.25/303,348
6. Step 6: Final answer
   x = 1,438,148.89