Finding the Third Proportional to 530,456 and 1,085,422

Step by Step Solution

1. Step 1: Write the proportion equation
   530,456 : 1,085,422 = 1,085,422 : x
2. Step 2: Convert to fraction form
   530,456/1,085,422 = 1,085,422/x
3. Step 3: Cross multiply
   530,456x = 1,085,422 × 1,085,422
4. Step 4: Simplify right side
   530,456x = 1,178,140,918,084
5. Step 5: Solve for x
   x = 1,178,140,918,084/530,456
6. Step 6: Final answer
   x = 2,220,996.50