Finding the Third Proportional to 86,048 and 187,648

Step by Step Solution

1. Step 1: Write the proportion equation
   86,048 : 187,648 = 187,648 : x
2. Step 2: Convert to fraction form
   86,048/187,648 = 187,648/x
3. Step 3: Cross multiply
   86,048x = 187,648 × 187,648
4. Step 4: Simplify right side
   86,048x = 35,211,771,904
5. Step 5: Solve for x
   x = 35,211,771,904/86,048
6. Step 6: Final answer
   x = 409,210.81