Finding the Third Proportional to 143,316 and 303,716.25

Step by Step Solution

1. Step 1: Write the proportion equation
   143,316 : 303,716.25 = 303,716.25 : x
2. Step 2: Convert to fraction form
   143,316/303,716.25 = 303,716.25/x
3. Step 3: Cross multiply
   143,316x = 303,716.25 × 303,716.25
4. Step 4: Simplify right side
   143,316x = 92,243,560,514.06
5. Step 5: Solve for x
   x = 92,243,560,514.06/143,316
6. Step 6: Final answer
   x = 643,637.56