Finding the Third Proportional to 143,868 and 308,472

Step by Step Solution

1. Step 1: Write the proportion equation
   143,868 : 308,472 = 308,472 : x
2. Step 2: Convert to fraction form
   143,868/308,472 = 308,472/x
3. Step 3: Cross multiply
   143,868x = 308,472 × 308,472
4. Step 4: Simplify right side
   143,868x = 95,154,974,784
5. Step 5: Solve for x
   x = 95,154,974,784/143,868
6. Step 6: Final answer
   x = 661,404.72