Finding the Third Proportional to 424,139 and 897,361

Step by Step Solution

1. Step 1: Write the proportion equation
   424,139 : 897,361 = 897,361 : x
2. Step 2: Convert to fraction form
   424,139/897,361 = 897,361/x
3. Step 3: Cross multiply
   424,139x = 897,361 × 897,361
4. Step 4: Simplify right side
   424,139x = 805,256,764,321
5. Step 5: Solve for x
   x = 805,256,764,321/424,139
6. Step 6: Final answer
   x = 1,898,568.07