Finding the Third Proportional to 303,286.78 and 660,086.72

Step by Step Solution

1. Step 1: Write the proportion equation
   303,286.78 : 660,086.72 = 660,086.72 : x
2. Step 2: Convert to fraction form
   303,286.78/660,086.72 = 660,086.72/x
3. Step 3: Cross multiply
   303,286.78x = 660,086.72 × 660,086.72
4. Step 4: Simplify right side
   303,286.78x = 435,714,476,270.14
5. Step 5: Solve for x
   x = 435,714,476,270.14/303,286.78
6. Step 6: Final answer
   x = 1,436,641.83