Finding the Third Proportional to 42,620 and 89,734

Step by Step Solution

1. Step 1: Write the proportion equation
   42,620 : 89,734 = 89,734 : x
2. Step 2: Convert to fraction form
   42,620/89,734 = 89,734/x
3. Step 3: Cross multiply
   42,620x = 89,734 × 89,734
4. Step 4: Simplify right side
   42,620x = 8,052,190,756
5. Step 5: Solve for x
   x = 8,052,190,756/42,620
6. Step 6: Final answer
   x = 188,929.86