Finding the Third Proportional to 628,912 and 1,364,128

Step by Step Solution

1. Step 1: Write the proportion equation
   628,912 : 1,364,128 = 1,364,128 : x
2. Step 2: Convert to fraction form
   628,912/1,364,128 = 1,364,128/x
3. Step 3: Cross multiply
   628,912x = 1,364,128 × 1,364,128
4. Step 4: Simplify right side
   628,912x = 1,860,845,200,384
5. Step 5: Solve for x
   x = 1,860,845,200,384/628,912
6. Step 6: Final answer
   x = 2,958,832.40