Finding the Third Proportional to 291,096 and 428,452

Step by Step Solution

1. Step 1: Write the proportion equation
   291,096 : 428,452 = 428,452 : x
2. Step 2: Convert to fraction form
   291,096/428,452 = 428,452/x
3. Step 3: Cross multiply
   291,096x = 428,452 × 428,452
4. Step 4: Simplify right side
   291,096x = 183,571,116,304
5. Step 5: Solve for x
   x = 183,571,116,304/291,096
6. Step 6: Final answer
   x = 630,620.54