Finding the Third Proportional to 426,896 and 618,300

Step by Step Solution

1. Step 1: Write the proportion equation
   426,896 : 618,300 = 618,300 : x
2. Step 2: Convert to fraction form
   426,896/618,300 = 618,300/x
3. Step 3: Cross multiply
   426,896x = 618,300 × 618,300
4. Step 4: Simplify right side
   426,896x = 382,294,890,000
5. Step 5: Solve for x
   x = 382,294,890,000/426,896
6. Step 6: Final answer
   x = 895,522.31