Finding the Third Proportional to 199,539 and 443,419.50

Step by Step Solution

1. Step 1: Write the proportion equation
   199,539 : 443,419.50 = 443,419.50 : x
2. Step 2: Convert to fraction form
   199,539/443,419.50 = 443,419.50/x
3. Step 3: Cross multiply
   199,539x = 443,419.50 × 443,419.50
4. Step 4: Simplify right side
   199,539x = 196,620,852,980.25
5. Step 5: Solve for x
   x = 196,620,852,980.25/199,539
6. Step 6: Final answer
   x = 985,375.56