Finding the Third Proportional to 140,189.25 and 307,519.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,189.25 : 307,519.50 = 307,519.50 : x
2. Step 2: Convert to fraction form
   140,189.25/307,519.50 = 307,519.50/x
3. Step 3: Cross multiply
   140,189.25x = 307,519.50 × 307,519.50
4. Step 4: Simplify right side
   140,189.25x = 94,568,242,880.25
5. Step 5: Solve for x
   x = 94,568,242,880.25/140,189.25
6. Step 6: Final answer
   x = 674,575.57