Finding the Third Proportional to 42,488 and 87,704

Step by Step Solution

1. Step 1: Write the proportion equation
   42,488 : 87,704 = 87,704 : x
2. Step 2: Convert to fraction form
   42,488/87,704 = 87,704/x
3. Step 3: Cross multiply
   42,488x = 87,704 × 87,704
4. Step 4: Simplify right side
   42,488x = 7,691,991,616
5. Step 5: Solve for x
   x = 7,691,991,616/42,488
6. Step 6: Final answer
   x = 181,039.15