Finding the Third Proportional to 451,818 and 699,603.75

Step by Step Solution

1. Step 1: Write the proportion equation
   451,818 : 699,603.75 = 699,603.75 : x
2. Step 2: Convert to fraction form
   451,818/699,603.75 = 699,603.75/x
3. Step 3: Cross multiply
   451,818x = 699,603.75 × 699,603.75
4. Step 4: Simplify right side
   451,818x = 489,445,407,014.06
5. Step 5: Solve for x
   x = 489,445,407,014.06/451,818
6. Step 6: Final answer
   x = 1,083,280.01