Finding the Third Proportional to 669,888 and 1,456,128

Step by Step Solution

1. Step 1: Write the proportion equation
   669,888 : 1,456,128 = 1,456,128 : x
2. Step 2: Convert to fraction form
   669,888/1,456,128 = 1,456,128/x
3. Step 3: Cross multiply
   669,888x = 1,456,128 × 1,456,128
4. Step 4: Simplify right side
   669,888x = 2,120,308,752,384
5. Step 5: Solve for x
   x = 2,120,308,752,384/669,888
6. Step 6: Final answer
   x = 3,165,169.03