Finding the Third Proportional to 200,328 and 309,773

Step by Step Solution

1. Step 1: Write the proportion equation
   200,328 : 309,773 = 309,773 : x
2. Step 2: Convert to fraction form
   200,328/309,773 = 309,773/x
3. Step 3: Cross multiply
   200,328x = 309,773 × 309,773
4. Step 4: Simplify right side
   200,328x = 95,959,311,529
5. Step 5: Solve for x
   x = 95,959,311,529/200,328
6. Step 6: Final answer
   x = 479,010.98