Finding the Third Proportional to 200,620 and 304,870

Step by Step Solution

1. Step 1: Write the proportion equation
   200,620 : 304,870 = 304,870 : x
2. Step 2: Convert to fraction form
   200,620/304,870 = 304,870/x
3. Step 3: Cross multiply
   200,620x = 304,870 × 304,870
4. Step 4: Simplify right side
   200,620x = 92,945,716,900
5. Step 5: Solve for x
   x = 92,945,716,900/200,620
6. Step 6: Final answer
   x = 463,292.38