Finding the Third Proportional to 184,688 and 398,904

Step by Step Solution

1. Step 1: Write the proportion equation
   184,688 : 398,904 = 398,904 : x
2. Step 2: Convert to fraction form
   184,688/398,904 = 398,904/x
3. Step 3: Cross multiply
   184,688x = 398,904 × 398,904
4. Step 4: Simplify right side
   184,688x = 159,124,401,216
5. Step 5: Solve for x
   x = 159,124,401,216/184,688
6. Step 6: Final answer
   x = 861,584.95