Finding the Third Proportional to 608,631 and 890,410.50

Step by Step Solution

1. Step 1: Write the proportion equation
   608,631 : 890,410.50 = 890,410.50 : x
2. Step 2: Convert to fraction form
   608,631/890,410.50 = 890,410.50/x
3. Step 3: Cross multiply
   608,631x = 890,410.50 × 890,410.50
4. Step 4: Simplify right side
   608,631x = 792,830,858,510.25
5. Step 5: Solve for x
   x = 792,830,858,510.25/608,631
6. Step 6: Final answer
   x = 1,302,646.20