Finding the Third Proportional to 638,615 and 960,605.50

Step by Step Solution

1. Step 1: Write the proportion equation
   638,615 : 960,605.50 = 960,605.50 : x
2. Step 2: Convert to fraction form
   638,615/960,605.50 = 960,605.50/x
3. Step 3: Cross multiply
   638,615x = 960,605.50 × 960,605.50
4. Step 4: Simplify right side
   638,615x = 922,762,926,630.25
5. Step 5: Solve for x
   x = 922,762,926,630.25/638,615
6. Step 6: Final answer
   x = 1,444,944.02