Finding the Third Proportional to 42,579.58 and 89,568.76

Step by Step Solution

1. Step 1: Write the proportion equation
   42,579.58 : 89,568.76 = 89,568.76 : x
2. Step 2: Convert to fraction form
   42,579.58/89,568.76 = 89,568.76/x
3. Step 3: Cross multiply
   42,579.58x = 89,568.76 × 89,568.76
4. Step 4: Simplify right side
   42,579.58x = 8,022,562,026.20
5. Step 5: Solve for x
   x = 8,022,562,026.20/42,579.58
6. Step 6: Final answer
   x = 188,413.37