Finding the Third Proportional to 628,788 and 888,868.50

Step by Step Solution

1. Step 1: Write the proportion equation
   628,788 : 888,868.50 = 888,868.50 : x
2. Step 2: Convert to fraction form
   628,788/888,868.50 = 888,868.50/x
3. Step 3: Cross multiply
   628,788x = 888,868.50 × 888,868.50
4. Step 4: Simplify right side
   628,788x = 790,087,210,292.25
5. Step 5: Solve for x
   x = 790,087,210,292.25/628,788
6. Step 6: Final answer
   x = 1,256,524.00