Finding the Third Proportional to 396,618.75 and 868,333.50

Step by Step Solution

1. Step 1: Write the proportion equation
   396,618.75 : 868,333.50 = 868,333.50 : x
2. Step 2: Convert to fraction form
   396,618.75/868,333.50 = 868,333.50/x
3. Step 3: Cross multiply
   396,618.75x = 868,333.50 × 868,333.50
4. Step 4: Simplify right side
   396,618.75x = 754,003,067,222.25
5. Step 5: Solve for x
   x = 754,003,067,222.25/396,618.75
6. Step 6: Final answer
   x = 1,901,077.72