Finding the Third Proportional to 396,698.50 and 872,119

Step by Step Solution

1. Step 1: Write the proportion equation
   396,698.50 : 872,119 = 872,119 : x
2. Step 2: Convert to fraction form
   396,698.50/872,119 = 872,119/x
3. Step 3: Cross multiply
   396,698.50x = 872,119 × 872,119
4. Step 4: Simplify right side
   396,698.50x = 760,591,550,161
5. Step 5: Solve for x
   x = 760,591,550,161/396,698.50
6. Step 6: Final answer
   x = 1,917,303.82