Finding the Third Proportional to 199,539 and 443,364

Step by Step Solution

1. Step 1: Write the proportion equation
   199,539 : 443,364 = 443,364 : x
2. Step 2: Convert to fraction form
   199,539/443,364 = 443,364/x
3. Step 3: Cross multiply
   199,539x = 443,364 × 443,364
4. Step 4: Simplify right side
   199,539x = 196,571,636,496
5. Step 5: Solve for x
   x = 196,571,636,496/199,539
6. Step 6: Final answer
   x = 985,128.90