Finding the Third Proportional to 216,432 and 472,228

Step by Step Solution

1. Step 1: Write the proportion equation
   216,432 : 472,228 = 472,228 : x
2. Step 2: Convert to fraction form
   216,432/472,228 = 472,228/x
3. Step 3: Cross multiply
   216,432x = 472,228 × 472,228
4. Step 4: Simplify right side
   216,432x = 222,999,283,984
5. Step 5: Solve for x
   x = 222,999,283,984/216,432
6. Step 6: Final answer
   x = 1,030,343.41