Finding the Third Proportional to 285,184 and 443,544

Step by Step Solution

1. Step 1: Write the proportion equation
   285,184 : 443,544 = 443,544 : x
2. Step 2: Convert to fraction form
   285,184/443,544 = 443,544/x
3. Step 3: Cross multiply
   285,184x = 443,544 × 443,544
4. Step 4: Simplify right side
   285,184x = 196,731,279,936
5. Step 5: Solve for x
   x = 196,731,279,936/285,184
6. Step 6: Final answer
   x = 689,839.82