Finding the Third Proportional to 200,637 and 311,667.75

Step by Step Solution

1. Step 1: Write the proportion equation
   200,637 : 311,667.75 = 311,667.75 : x
2. Step 2: Convert to fraction form
   200,637/311,667.75 = 311,667.75/x
3. Step 3: Cross multiply
   200,637x = 311,667.75 × 311,667.75
4. Step 4: Simplify right side
   200,637x = 97,136,786,390.06
5. Step 5: Solve for x
   x = 97,136,786,390.06/200,637
6. Step 6: Final answer
   x = 484,141.94