Finding the Third Proportional to 65,453.91 and 142,571.81

Step by Step Solution

1. Step 1: Write the proportion equation
   65,453.91 : 142,571.81 = 142,571.81 : x
2. Step 2: Convert to fraction form
   65,453.91/142,571.81 = 142,571.81/x
3. Step 3: Cross multiply
   65,453.91x = 142,571.81 × 142,571.81
4. Step 4: Simplify right side
   65,453.91x = 20,326,721,719.54
5. Step 5: Solve for x
   x = 20,326,721,719.54/65,453.91
6. Step 6: Final answer
   x = 310,550.17