Finding the Third Proportional to 27,831.50 and 42,666

Step by Step Solution

1. Step 1: Write the proportion equation
   27,831.50 : 42,666 = 42,666 : x
2. Step 2: Convert to fraction form
   27,831.50/42,666 = 42,666/x
3. Step 3: Cross multiply
   27,831.50x = 42,666 × 42,666
4. Step 4: Simplify right side
   27,831.50x = 1,820,387,556
5. Step 5: Solve for x
   x = 1,820,387,556/27,831.50
6. Step 6: Final answer
   x = 65,407.45