Finding the Third Proportional to 400,084.50 and 872,065.50

Step by Step Solution

1. Step 1: Write the proportion equation
   400,084.50 : 872,065.50 = 872,065.50 : x
2. Step 2: Convert to fraction form
   400,084.50/872,065.50 = 872,065.50/x
3. Step 3: Cross multiply
   400,084.50x = 872,065.50 × 872,065.50
4. Step 4: Simplify right side
   400,084.50x = 760,498,236,290.25
5. Step 5: Solve for x
   x = 760,498,236,290.25/400,084.50
6. Step 6: Final answer
   x = 1,900,844.04