Finding the Third Proportional to 42,073 and 89,339

Step by Step Solution

1. Step 1: Write the proportion equation
   42,073 : 89,339 = 89,339 : x
2. Step 2: Convert to fraction form
   42,073/89,339 = 89,339/x
3. Step 3: Cross multiply
   42,073x = 89,339 × 89,339
4. Step 4: Simplify right side
   42,073x = 7,981,456,921
5. Step 5: Solve for x
   x = 7,981,456,921/42,073
6. Step 6: Final answer
   x = 189,704.96