Finding the Third Proportional to 42,811.88 and 68,180.63

Step by Step Solution

1. Step 1: Write the proportion equation
   42,811.88 : 68,180.63 = 68,180.63 : x
2. Step 2: Convert to fraction form
   42,811.88/68,180.63 = 68,180.63/x
3. Step 3: Cross multiply
   42,811.88x = 68,180.63 × 68,180.63
4. Step 4: Simplify right side
   42,811.88x = 4,648,597,625.39
5. Step 5: Solve for x
   x = 4,648,597,625.39/42,811.88
6. Step 6: Final answer
   x = 108,581.97