Finding the Third Proportional to 585,648 and 1,222,128

Step by Step Solution

1. Step 1: Write the proportion equation
   585,648 : 1,222,128 = 1,222,128 : x
2. Step 2: Convert to fraction form
   585,648/1,222,128 = 1,222,128/x
3. Step 3: Cross multiply
   585,648x = 1,222,128 × 1,222,128
4. Step 4: Simplify right side
   585,648x = 1,493,596,848,384
5. Step 5: Solve for x
   x = 1,493,596,848,384/585,648
6. Step 6: Final answer
   x = 2,550,332.02