Finding the Third Proportional to 59,218.59 and 76,831.03

Step by Step Solution

1. Step 1: Write the proportion equation
   59,218.59 : 76,831.03 = 76,831.03 : x
2. Step 2: Convert to fraction form
   59,218.59/76,831.03 = 76,831.03/x
3. Step 3: Cross multiply
   59,218.59x = 76,831.03 × 76,831.03
4. Step 4: Simplify right side
   59,218.59x = 5,903,007,362.94
5. Step 5: Solve for x
   x = 5,903,007,362.94/59,218.59
6. Step 6: Final answer
   x = 99,681.65