Finding the Third Proportional to 288,697.50 and 629,802

Step by Step Solution

1. Step 1: Write the proportion equation
   288,697.50 : 629,802 = 629,802 : x
2. Step 2: Convert to fraction form
   288,697.50/629,802 = 629,802/x
3. Step 3: Cross multiply
   288,697.50x = 629,802 × 629,802
4. Step 4: Simplify right side
   288,697.50x = 396,650,559,204
5. Step 5: Solve for x
   x = 396,650,559,204/288,697.50
6. Step 6: Final answer
   x = 1,373,931.40