Finding the Third Proportional to 249,442 and 443,477

Step by Step Solution

1. Step 1: Write the proportion equation
   249,442 : 443,477 = 443,477 : x
2. Step 2: Convert to fraction form
   249,442/443,477 = 443,477/x
3. Step 3: Cross multiply
   249,442x = 443,477 × 443,477
4. Step 4: Simplify right side
   249,442x = 196,671,849,529
5. Step 5: Solve for x
   x = 196,671,849,529/249,442
6. Step 6: Final answer
   x = 788,447.21