Finding the Third Proportional to 91,512 and 200,520

Step by Step Solution

1. Step 1: Write the proportion equation
   91,512 : 200,520 = 200,520 : x
2. Step 2: Convert to fraction form
   91,512/200,520 = 200,520/x
3. Step 3: Cross multiply
   91,512x = 200,520 × 200,520
4. Step 4: Simplify right side
   91,512x = 40,208,270,400
5. Step 5: Solve for x
   x = 40,208,270,400/91,512
6. Step 6: Final answer
   x = 439,377.03