Finding the Third Proportional to 303,199.50 and 656,859

Step by Step Solution

1. Step 1: Write the proportion equation
   303,199.50 : 656,859 = 656,859 : x
2. Step 2: Convert to fraction form
   303,199.50/656,859 = 656,859/x
3. Step 3: Cross multiply
   303,199.50x = 656,859 × 656,859
4. Step 4: Simplify right side
   303,199.50x = 431,463,745,881
5. Step 5: Solve for x
   x = 431,463,745,881/303,199.50
6. Step 6: Final answer
   x = 1,423,035.81