Finding the Third Proportional to 42,858 and 87,804

Step by Step Solution

1. Step 1: Write the proportion equation
   42,858 : 87,804 = 87,804 : x
2. Step 2: Convert to fraction form
   42,858/87,804 = 87,804/x
3. Step 3: Cross multiply
   42,858x = 87,804 × 87,804
4. Step 4: Simplify right side
   42,858x = 7,709,542,416
5. Step 5: Solve for x
   x = 7,709,542,416/42,858
6. Step 6: Final answer
   x = 179,885.73