Finding the Third Proportional to 198,308.50 and 435,983

Step by Step Solution

1. Step 1: Write the proportion equation
   198,308.50 : 435,983 = 435,983 : x
2. Step 2: Convert to fraction form
   198,308.50/435,983 = 435,983/x
3. Step 3: Cross multiply
   198,308.50x = 435,983 × 435,983
4. Step 4: Simplify right side
   198,308.50x = 190,081,176,289
5. Step 5: Solve for x
   x = 190,081,176,289/198,308.50
6. Step 6: Final answer
   x = 958,512.50