Finding the Third Proportional to 140,716.50 and 308,112

Step by Step Solution

1. Step 1: Write the proportion equation
   140,716.50 : 308,112 = 308,112 : x
2. Step 2: Convert to fraction form
   140,716.50/308,112 = 308,112/x
3. Step 3: Cross multiply
   140,716.50x = 308,112 × 308,112
4. Step 4: Simplify right side
   140,716.50x = 94,933,004,544
5. Step 5: Solve for x
   x = 94,933,004,544/140,716.50
6. Step 6: Final answer
   x = 674,640.18