Finding the Third Proportional to 42,806 and 87,988

Step by Step Solution

1. Step 1: Write the proportion equation
   42,806 : 87,988 = 87,988 : x
2. Step 2: Convert to fraction form
   42,806/87,988 = 87,988/x
3. Step 3: Cross multiply
   42,806x = 87,988 × 87,988
4. Step 4: Simplify right side
   42,806x = 7,741,888,144
5. Step 5: Solve for x
   x = 7,741,888,144/42,806
6. Step 6: Final answer
   x = 180,859.88