Finding the Third Proportional to 209,474 and 443,212

Step by Step Solution

1. Step 1: Write the proportion equation
   209,474 : 443,212 = 443,212 : x
2. Step 2: Convert to fraction form
   209,474/443,212 = 443,212/x
3. Step 3: Cross multiply
   209,474x = 443,212 × 443,212
4. Step 4: Simplify right side
   209,474x = 196,436,876,944
5. Step 5: Solve for x
   x = 196,436,876,944/209,474
6. Step 6: Final answer
   x = 937,762.57