Finding the Third Proportional to 42,326 and 87,212

Step by Step Solution

1. Step 1: Write the proportion equation
   42,326 : 87,212 = 87,212 : x
2. Step 2: Convert to fraction form
   42,326/87,212 = 87,212/x
3. Step 3: Cross multiply
   42,326x = 87,212 × 87,212
4. Step 4: Simplify right side
   42,326x = 7,605,932,944
5. Step 5: Solve for x
   x = 7,605,932,944/42,326
6. Step 6: Final answer
   x = 179,698.84