Finding the Third Proportional to 628,866 and 888,988.50

Step by Step Solution

1. Step 1: Write the proportion equation
   628,866 : 888,988.50 = 888,988.50 : x
2. Step 2: Convert to fraction form
   628,866/888,988.50 = 888,988.50/x
3. Step 3: Cross multiply
   628,866x = 888,988.50 × 888,988.50
4. Step 4: Simplify right side
   628,866x = 790,300,553,132.25
5. Step 5: Solve for x
   x = 790,300,553,132.25/628,866
6. Step 6: Final answer
   x = 1,256,707.40