Finding the Third Proportional to 59,671.69 and 128,683.69

Step by Step Solution

1. Step 1: Write the proportion equation
   59,671.69 : 128,683.69 = 128,683.69 : x
2. Step 2: Convert to fraction form
   59,671.69/128,683.69 = 128,683.69/x
3. Step 3: Cross multiply
   59,671.69x = 128,683.69 × 128,683.69
4. Step 4: Simplify right side
   59,671.69x = 16,559,491,428.60
5. Step 5: Solve for x
   x = 16,559,491,428.60/59,671.69
6. Step 6: Final answer
   x = 277,510.02