Finding the Third Proportional to 143,208 and 308,546

Step by Step Solution

1. Step 1: Write the proportion equation
   143,208 : 308,546 = 308,546 : x
2. Step 2: Convert to fraction form
   143,208/308,546 = 308,546/x
3. Step 3: Cross multiply
   143,208x = 308,546 × 308,546
4. Step 4: Simplify right side
   143,208x = 95,200,634,116
5. Step 5: Solve for x
   x = 95,200,634,116/143,208
6. Step 6: Final answer
   x = 664,771.76