Finding the Third Proportional to 83,040.75 and 128,936

Step by Step Solution

1. Step 1: Write the proportion equation
   83,040.75 : 128,936 = 128,936 : x
2. Step 2: Convert to fraction form
   83,040.75/128,936 = 128,936/x
3. Step 3: Cross multiply
   83,040.75x = 128,936 × 128,936
4. Step 4: Simplify right side
   83,040.75x = 16,624,492,096
5. Step 5: Solve for x
   x = 16,624,492,096/83,040.75
6. Step 6: Final answer
   x = 200,196.80