Finding the Third Proportional to 648,960 and 1,000,128

Step by Step Solution

1. Step 1: Write the proportion equation
   648,960 : 1,000,128 = 1,000,128 : x
2. Step 2: Convert to fraction form
   648,960/1,000,128 = 1,000,128/x
3. Step 3: Cross multiply
   648,960x = 1,000,128 × 1,000,128
4. Step 4: Simplify right side
   648,960x = 1,000,256,016,384
5. Step 5: Solve for x
   x = 1,000,256,016,384/648,960
6. Step 6: Final answer
   x = 1,541,321.52