Finding the Third Proportional to 140,040 and 307,291.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,040 : 307,291.50 = 307,291.50 : x
2. Step 2: Convert to fraction form
   140,040/307,291.50 = 307,291.50/x
3. Step 3: Cross multiply
   140,040x = 307,291.50 × 307,291.50
4. Step 4: Simplify right side
   140,040x = 94,428,065,972.25
5. Step 5: Solve for x
   x = 94,428,065,972.25/140,040
6. Step 6: Final answer
   x = 674,293.53