Finding the Third Proportional to 78,868.69 and 118,371.38

Step by Step Solution

1. Step 1: Write the proportion equation
   78,868.69 : 118,371.38 = 118,371.38 : x
2. Step 2: Convert to fraction form
   78,868.69/118,371.38 = 118,371.38/x
3. Step 3: Cross multiply
   78,868.69x = 118,371.38 × 118,371.38
4. Step 4: Simplify right side
   78,868.69x = 14,011,782,419.39
5. Step 5: Solve for x
   x = 14,011,782,419.39/78,868.69
6. Step 6: Final answer
   x = 177,659.64