Finding the Third Proportional to 251,088 and 384,648

Step by Step Solution

1. Step 1: Write the proportion equation
   251,088 : 384,648 = 384,648 : x
2. Step 2: Convert to fraction form
   251,088/384,648 = 384,648/x
3. Step 3: Cross multiply
   251,088x = 384,648 × 384,648
4. Step 4: Simplify right side
   251,088x = 147,954,083,904
5. Step 5: Solve for x
   x = 147,954,083,904/251,088
6. Step 6: Final answer
   x = 589,251.91