Finding the Third Proportional to 142,930 and 304,355

Step by Step Solution

1. Step 1: Write the proportion equation
   142,930 : 304,355 = 304,355 : x
2. Step 2: Convert to fraction form
   142,930/304,355 = 304,355/x
3. Step 3: Cross multiply
   142,930x = 304,355 × 304,355
4. Step 4: Simplify right side
   142,930x = 92,631,966,025
5. Step 5: Solve for x
   x = 92,631,966,025/142,930
6. Step 6: Final answer
   x = 648,093.23