Finding the Third Proportional to 78,868.69 and 110,665.62

Step by Step Solution

1. Step 1: Write the proportion equation
   78,868.69 : 110,665.62 = 110,665.62 : x
2. Step 2: Convert to fraction form
   78,868.69/110,665.62 = 110,665.62/x
3. Step 3: Cross multiply
   78,868.69x = 110,665.62 × 110,665.62
4. Step 4: Simplify right side
   78,868.69x = 12,246,878,827.49
5. Step 5: Solve for x
   x = 12,246,878,827.49/78,868.69
6. Step 6: Final answer
   x = 155,281.89