Finding the Third Proportional to 677,403 and 997,390.50

Step by Step Solution

1. Step 1: Write the proportion equation
   677,403 : 997,390.50 = 997,390.50 : x
2. Step 2: Convert to fraction form
   677,403/997,390.50 = 997,390.50/x
3. Step 3: Cross multiply
   677,403x = 997,390.50 × 997,390.50
4. Step 4: Simplify right side
   677,403x = 994,787,809,490.25
5. Step 5: Solve for x
   x = 994,787,809,490.25/677,403
6. Step 6: Final answer
   x = 1,468,531.74