Finding the Third Proportional to 42,115 and 90,065

Step by Step Solution

1. Step 1: Write the proportion equation
   42,115 : 90,065 = 90,065 : x
2. Step 2: Convert to fraction form
   42,115/90,065 = 90,065/x
3. Step 3: Cross multiply
   42,115x = 90,065 × 90,065
4. Step 4: Simplify right side
   42,115x = 8,111,704,225
5. Step 5: Solve for x
   x = 8,111,704,225/42,115
6. Step 6: Final answer
   x = 192,608.43