Finding the Third Proportional to 211,423 and 443,606

Step by Step Solution

1. Step 1: Write the proportion equation
   211,423 : 443,606 = 443,606 : x
2. Step 2: Convert to fraction form
   211,423/443,606 = 443,606/x
3. Step 3: Cross multiply
   211,423x = 443,606 × 443,606
4. Step 4: Simplify right side
   211,423x = 196,786,283,236
5. Step 5: Solve for x
   x = 196,786,283,236/211,423
6. Step 6: Final answer
   x = 930,770.46