Finding the Third Proportional to 214,876 and 472,640

Step by Step Solution

1. Step 1: Write the proportion equation
   214,876 : 472,640 = 472,640 : x
2. Step 2: Convert to fraction form
   214,876/472,640 = 472,640/x
3. Step 3: Cross multiply
   214,876x = 472,640 × 472,640
4. Step 4: Simplify right side
   214,876x = 223,388,569,600
5. Step 5: Solve for x
   x = 223,388,569,600/214,876
6. Step 6: Final answer
   x = 1,039,616.20