Finding the Third Proportional to 68,256.84 and 99,787.78

Step by Step Solution

1. Step 1: Write the proportion equation
   68,256.84 : 99,787.78 = 99,787.78 : x
2. Step 2: Convert to fraction form
   68,256.84/99,787.78 = 99,787.78/x
3. Step 3: Cross multiply
   68,256.84x = 99,787.78 × 99,787.78
4. Step 4: Simplify right side
   68,256.84x = 9,957,601,286.80
5. Step 5: Solve for x
   x = 9,957,601,286.80/68,256.84
6. Step 6: Final answer
   x = 145,884.29