Finding the Third Proportional to 628,413 and 1,356,436.50

Step by Step Solution

1. Step 1: Write the proportion equation
   628,413 : 1,356,436.50 = 1,356,436.50 : x
2. Step 2: Convert to fraction form
   628,413/1,356,436.50 = 1,356,436.50/x
3. Step 3: Cross multiply
   628,413x = 1,356,436.50 × 1,356,436.50
4. Step 4: Simplify right side
   628,413x = 1,839,919,978,532.25
5. Step 5: Solve for x
   x = 1,839,919,978,532.25/628,413
6. Step 6: Final answer
   x = 2,927,883.38