Finding the Third Proportional to 68,674.78 and 142,612.59

Step by Step Solution

1. Step 1: Write the proportion equation
   68,674.78 : 142,612.59 = 142,612.59 : x
2. Step 2: Convert to fraction form
   68,674.78/142,612.59 = 142,612.59/x
3. Step 3: Cross multiply
   68,674.78x = 142,612.59 × 142,612.59
4. Step 4: Simplify right side
   68,674.78x = 20,338,351,896.10
5. Step 5: Solve for x
   x = 20,338,351,896.10/68,674.78
6. Step 6: Final answer
   x = 296,154.59