Finding the Third Proportional to 10,198.50 and 20,945.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,198.50 : 20,945.50 = 20,945.50 : x
2. Step 2: Convert to fraction form
   10,198.50/20,945.50 = 20,945.50/x
3. Step 3: Cross multiply
   10,198.50x = 20,945.50 × 20,945.50
4. Step 4: Simplify right side
   10,198.50x = 438,713,970.25
5. Step 5: Solve for x
   x = 438,713,970.25/10,198.50
6. Step 6: Final answer
   x = 43,017.50