Finding the Third Proportional to 143,874 and 308,484

Step by Step Solution

1. Step 1: Write the proportion equation
   143,874 : 308,484 = 308,484 : x
2. Step 2: Convert to fraction form
   143,874/308,484 = 308,484/x
3. Step 3: Cross multiply
   143,874x = 308,484 × 308,484
4. Step 4: Simplify right side
   143,874x = 95,162,378,256
5. Step 5: Solve for x
   x = 95,162,378,256/143,874
6. Step 6: Final answer
   x = 661,428.60