Finding the Third Proportional to 217,420 and 473,436

Step by Step Solution

1. Step 1: Write the proportion equation
   217,420 : 473,436 = 473,436 : x
2. Step 2: Convert to fraction form
   217,420/473,436 = 473,436/x
3. Step 3: Cross multiply
   217,420x = 473,436 × 473,436
4. Step 4: Simplify right side
   217,420x = 224,141,646,096
5. Step 5: Solve for x
   x = 224,141,646,096/217,420
6. Step 6: Final answer
   x = 1,030,915.49