Finding the Third Proportional to 878,809.50 and 1,325,200.50

Step by Step Solution

1. Step 1: Write the proportion equation
   878,809.50 : 1,325,200.50 = 1,325,200.50 : x
2. Step 2: Convert to fraction form
   878,809.50/1,325,200.50 = 1,325,200.50/x
3. Step 3: Cross multiply
   878,809.50x = 1,325,200.50 × 1,325,200.50
4. Step 4: Simplify right side
   878,809.50x = 1,756,156,365,200.25
5. Step 5: Solve for x
   x = 1,756,156,365,200.25/878,809.50
6. Step 6: Final answer
   x = 1,998,335.66