Finding the Third Proportional to 678,411 and 996,880.50

Step by Step Solution

1. Step 1: Write the proportion equation
   678,411 : 996,880.50 = 996,880.50 : x
2. Step 2: Convert to fraction form
   678,411/996,880.50 = 996,880.50/x
3. Step 3: Cross multiply
   678,411x = 996,880.50 × 996,880.50
4. Step 4: Simplify right side
   678,411x = 993,770,731,280.25
5. Step 5: Solve for x
   x = 993,770,731,280.25/678,411
6. Step 6: Final answer
   x = 1,464,850.56