Finding the Third Proportional to 42,912 and 89,747

Step by Step Solution

1. Step 1: Write the proportion equation
   42,912 : 89,747 = 89,747 : x
2. Step 2: Convert to fraction form
   42,912/89,747 = 89,747/x
3. Step 3: Cross multiply
   42,912x = 89,747 × 89,747
4. Step 4: Simplify right side
   42,912x = 8,054,524,009
5. Step 5: Solve for x
   x = 8,054,524,009/42,912
6. Step 6: Final answer
   x = 187,698.64