Finding the Third Proportional to 71,680.78 and 155,822.06

Step by Step Solution

1. Step 1: Write the proportion equation
   71,680.78 : 155,822.06 = 155,822.06 : x
2. Step 2: Convert to fraction form
   71,680.78/155,822.06 = 155,822.06/x
3. Step 3: Cross multiply
   71,680.78x = 155,822.06 × 155,822.06
4. Step 4: Simplify right side
   71,680.78x = 24,280,515,161.75
5. Step 5: Solve for x
   x = 24,280,515,161.75/71,680.78
6. Step 6: Final answer
   x = 338,731.17