Finding the Third Proportional to 216,436 and 472,236

Step by Step Solution

1. Step 1: Write the proportion equation
   216,436 : 472,236 = 472,236 : x
2. Step 2: Convert to fraction form
   216,436/472,236 = 472,236/x
3. Step 3: Cross multiply
   216,436x = 472,236 × 472,236
4. Step 4: Simplify right side
   216,436x = 223,006,839,696
5. Step 5: Solve for x
   x = 223,006,839,696/216,436
6. Step 6: Final answer
   x = 1,030,359.27