Finding the Third Proportional to 200,054.50 and 309,667

Step by Step Solution

1. Step 1: Write the proportion equation
   200,054.50 : 309,667 = 309,667 : x
2. Step 2: Convert to fraction form
   200,054.50/309,667 = 309,667/x
3. Step 3: Cross multiply
   200,054.50x = 309,667 × 309,667
4. Step 4: Simplify right side
   200,054.50x = 95,893,650,889
5. Step 5: Solve for x
   x = 95,893,650,889/200,054.50
6. Step 6: Final answer
   x = 479,337.63