Finding the Third Proportional to 200,680 and 443,225

Step by Step Solution

1. Step 1: Write the proportion equation
   200,680 : 443,225 = 443,225 : x
2. Step 2: Convert to fraction form
   200,680/443,225 = 443,225/x
3. Step 3: Cross multiply
   200,680x = 443,225 × 443,225
4. Step 4: Simplify right side
   200,680x = 196,448,400,625
5. Step 5: Solve for x
   x = 196,448,400,625/200,680
6. Step 6: Final answer
   x = 978,913.70