Finding the Third Proportional to 143,084 and 308,309

Step by Step Solution

1. Step 1: Write the proportion equation
   143,084 : 308,309 = 308,309 : x
2. Step 2: Convert to fraction form
   143,084/308,309 = 308,309/x
3. Step 3: Cross multiply
   143,084x = 308,309 × 308,309
4. Step 4: Simplify right side
   143,084x = 95,054,439,481
5. Step 5: Solve for x
   x = 95,054,439,481/143,084
6. Step 6: Final answer
   x = 664,326.13