Finding the Third Proportional to 288,103 and 622,367.50

Step by Step Solution

1. Step 1: Write the proportion equation
   288,103 : 622,367.50 = 622,367.50 : x
2. Step 2: Convert to fraction form
   288,103/622,367.50 = 622,367.50/x
3. Step 3: Cross multiply
   288,103x = 622,367.50 × 622,367.50
4. Step 4: Simplify right side
   288,103x = 387,341,305,056.25
5. Step 5: Solve for x
   x = 387,341,305,056.25/288,103
6. Step 6: Final answer
   x = 1,344,454.26