Finding the Third Proportional to 200,918 and 303,978

Step by Step Solution

1. Step 1: Write the proportion equation
   200,918 : 303,978 = 303,978 : x
2. Step 2: Convert to fraction form
   200,918/303,978 = 303,978/x
3. Step 3: Cross multiply
   200,918x = 303,978 × 303,978
4. Step 4: Simplify right side
   200,918x = 92,402,624,484
5. Step 5: Solve for x
   x = 92,402,624,484/200,918
6. Step 6: Final answer
   x = 459,902.17