Finding the Third Proportional to 91,718 and 200,716

Step by Step Solution

1. Step 1: Write the proportion equation
   91,718 : 200,716 = 200,716 : x
2. Step 2: Convert to fraction form
   91,718/200,716 = 200,716/x
3. Step 3: Cross multiply
   91,718x = 200,716 × 200,716
4. Step 4: Simplify right side
   91,718x = 40,286,912,656
5. Step 5: Solve for x
   x = 40,286,912,656/91,718
6. Step 6: Final answer
   x = 439,247.61