Finding the Third Proportional to 638,616 and 960,606.50

Step by Step Solution

1. Step 1: Write the proportion equation
   638,616 : 960,606.50 = 960,606.50 : x
2. Step 2: Convert to fraction form
   638,616/960,606.50 = 960,606.50/x
3. Step 3: Cross multiply
   638,616x = 960,606.50 × 960,606.50
4. Step 4: Simplify right side
   638,616x = 922,764,847,842.25
5. Step 5: Solve for x
   x = 922,764,847,842.25/638,616
6. Step 6: Final answer
   x = 1,444,944.77