Finding the Third Proportional to 200,513.50 and 445,858.50

Step by Step Solution

1. Step 1: Write the proportion equation
   200,513.50 : 445,858.50 = 445,858.50 : x
2. Step 2: Convert to fraction form
   200,513.50/445,858.50 = 445,858.50/x
3. Step 3: Cross multiply
   200,513.50x = 445,858.50 × 445,858.50
4. Step 4: Simplify right side
   200,513.50x = 198,789,802,022.25
5. Step 5: Solve for x
   x = 198,789,802,022.25/200,513.50
6. Step 6: Final answer
   x = 991,403.58