Finding the Third Proportional to 664,038 and 922,243.50

Step by Step Solution

1. Step 1: Write the proportion equation
   664,038 : 922,243.50 = 922,243.50 : x
2. Step 2: Convert to fraction form
   664,038/922,243.50 = 922,243.50/x
3. Step 3: Cross multiply
   664,038x = 922,243.50 × 922,243.50
4. Step 4: Simplify right side
   664,038x = 850,533,073,292.25
5. Step 5: Solve for x
   x = 850,533,073,292.25/664,038
6. Step 6: Final answer
   x = 1,280,850.00