Finding the Third Proportional to 628,398 and 893,389.50

Step by Step Solution

1. Step 1: Write the proportion equation
   628,398 : 893,389.50 = 893,389.50 : x
2. Step 2: Convert to fraction form
   628,398/893,389.50 = 893,389.50/x
3. Step 3: Cross multiply
   628,398x = 893,389.50 × 893,389.50
4. Step 4: Simplify right side
   628,398x = 798,144,798,710.25
5. Step 5: Solve for x
   x = 798,144,798,710.25/628,398
6. Step 6: Final answer
   x = 1,270,126.26