Finding the Third Proportional to 91,520 and 200,536

Step by Step Solution

1. Step 1: Write the proportion equation
   91,520 : 200,536 = 200,536 : x
2. Step 2: Convert to fraction form
   91,520/200,536 = 200,536/x
3. Step 3: Cross multiply
   91,520x = 200,536 × 200,536
4. Step 4: Simplify right side
   91,520x = 40,214,687,296
5. Step 5: Solve for x
   x = 40,214,687,296/91,520
6. Step 6: Final answer
   x = 439,408.73