Finding the Third Proportional to 91,210 and 200,402

Step by Step Solution

1. Step 1: Write the proportion equation
   91,210 : 200,402 = 200,402 : x
2. Step 2: Convert to fraction form
   91,210/200,402 = 200,402/x
3. Step 3: Cross multiply
   91,210x = 200,402 × 200,402
4. Step 4: Simplify right side
   91,210x = 40,160,961,604
5. Step 5: Solve for x
   x = 40,160,961,604/91,210
6. Step 6: Final answer
   x = 440,313.14