Finding the Third Proportional to 42,581.81 and 89,573.63

Step by Step Solution

1. Step 1: Write the proportion equation
   42,581.81 : 89,573.63 = 89,573.63 : x
2. Step 2: Convert to fraction form
   42,581.81/89,573.63 = 89,573.63/x
3. Step 3: Cross multiply
   42,581.81x = 89,573.63 × 89,573.63
4. Step 4: Simplify right side
   42,581.81x = 8,023,434,295.64
5. Step 5: Solve for x
   x = 8,023,434,295.64/42,581.81
6. Step 6: Final answer
   x = 188,423.97