Finding the Third Proportional to 143,778 and 308,373

Step by Step Solution

1. Step 1: Write the proportion equation
   143,778 : 308,373 = 308,373 : x
2. Step 2: Convert to fraction form
   143,778/308,373 = 308,373/x
3. Step 3: Cross multiply
   143,778x = 308,373 × 308,373
4. Step 4: Simplify right side
   143,778x = 95,093,907,129
5. Step 5: Solve for x
   x = 95,093,907,129/143,778
6. Step 6: Final answer
   x = 661,394.00