Finding the Third Proportional to 42,259.50 and 56,918.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,259.50 : 56,918.25 = 56,918.25 : x
2. Step 2: Convert to fraction form
   42,259.50/56,918.25 = 56,918.25/x
3. Step 3: Cross multiply
   42,259.50x = 56,918.25 × 56,918.25
4. Step 4: Simplify right side
   42,259.50x = 3,239,687,183.06
5. Step 5: Solve for x
   x = 3,239,687,183.06/42,259.50
6. Step 6: Final answer
   x = 76,661.75