Finding the Third Proportional to 290,055 and 628,500

Step by Step Solution

1. Step 1: Write the proportion equation
   290,055 : 628,500 = 628,500 : x
2. Step 2: Convert to fraction form
   290,055/628,500 = 628,500/x
3. Step 3: Cross multiply
   290,055x = 628,500 × 628,500
4. Step 4: Simplify right side
   290,055x = 395,012,250,000
5. Step 5: Solve for x
   x = 395,012,250,000/290,055
6. Step 6: Final answer
   x = 1,361,852.92