Finding the Third Proportional to 664,220 and 1,422,930

Step by Step Solution

1. Step 1: Write the proportion equation
   664,220 : 1,422,930 = 1,422,930 : x
2. Step 2: Convert to fraction form
   664,220/1,422,930 = 1,422,930/x
3. Step 3: Cross multiply
   664,220x = 1,422,930 × 1,422,930
4. Step 4: Simplify right side
   664,220x = 2,024,729,784,900
5. Step 5: Solve for x
   x = 2,024,729,784,900/664,220
6. Step 6: Final answer
   x = 3,048,281.87