Finding the Third Proportional to 426,012 and 918,456

Step by Step Solution

1. Step 1: Write the proportion equation
   426,012 : 918,456 = 918,456 : x
2. Step 2: Convert to fraction form
   426,012/918,456 = 918,456/x
3. Step 3: Cross multiply
   426,012x = 918,456 × 918,456
4. Step 4: Simplify right side
   426,012x = 843,561,423,936
5. Step 5: Solve for x
   x = 843,561,423,936/426,012
6. Step 6: Final answer
   x = 1,980,135.36