Finding the Third Proportional to 287,046 and 410,885

Step by Step Solution

1. Step 1: Write the proportion equation
   287,046 : 410,885 = 410,885 : x
2. Step 2: Convert to fraction form
   287,046/410,885 = 410,885/x
3. Step 3: Cross multiply
   287,046x = 410,885 × 410,885
4. Step 4: Simplify right side
   287,046x = 168,826,483,225
5. Step 5: Solve for x
   x = 168,826,483,225/287,046
6. Step 6: Final answer
   x = 588,151.32