Finding the Third Proportional to 396,688.50 and 881,667

Step by Step Solution

1. Step 1: Write the proportion equation
   396,688.50 : 881,667 = 881,667 : x
2. Step 2: Convert to fraction form
   396,688.50/881,667 = 881,667/x
3. Step 3: Cross multiply
   396,688.50x = 881,667 × 881,667
4. Step 4: Simplify right side
   396,688.50x = 777,336,698,889
5. Step 5: Solve for x
   x = 777,336,698,889/396,688.50
6. Step 6: Final answer
   x = 1,959,564.49