Finding the Third Proportional to 142,991 and 304,981

Step by Step Solution

1. Step 1: Write the proportion equation
   142,991 : 304,981 = 304,981 : x
2. Step 2: Convert to fraction form
   142,991/304,981 = 304,981/x
3. Step 3: Cross multiply
   142,991x = 304,981 × 304,981
4. Step 4: Simplify right side
   142,991x = 93,013,410,361
5. Step 5: Solve for x
   x = 93,013,410,361/142,991
6. Step 6: Final answer
   x = 650,484.37