Finding the Third Proportional to 143,664 and 308,496

Step by Step Solution

1. Step 1: Write the proportion equation
   143,664 : 308,496 = 308,496 : x
2. Step 2: Convert to fraction form
   143,664/308,496 = 308,496/x
3. Step 3: Cross multiply
   143,664x = 308,496 × 308,496
4. Step 4: Simplify right side
   143,664x = 95,169,782,016
5. Step 5: Solve for x
   x = 95,169,782,016/143,664
6. Step 6: Final answer
   x = 662,446.97