Finding the Third Proportional to 91,479 and 200,238

Step by Step Solution

1. Step 1: Write the proportion equation
   91,479 : 200,238 = 200,238 : x
2. Step 2: Convert to fraction form
   91,479/200,238 = 200,238/x
3. Step 3: Cross multiply
   91,479x = 200,238 × 200,238
4. Step 4: Simplify right side
   91,479x = 40,095,256,644
5. Step 5: Solve for x
   x = 40,095,256,644/91,479
6. Step 6: Final answer
   x = 438,300.12