Finding the Third Proportional to 140,555.25 and 301,198.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,555.25 : 301,198.50 = 301,198.50 : x
2. Step 2: Convert to fraction form
   140,555.25/301,198.50 = 301,198.50/x
3. Step 3: Cross multiply
   140,555.25x = 301,198.50 × 301,198.50
4. Step 4: Simplify right side
   140,555.25x = 90,720,536,402.25
5. Step 5: Solve for x
   x = 90,720,536,402.25/140,555.25
6. Step 6: Final answer
   x = 645,443.95