Finding the Third Proportional to 400,069.50 and 868,825.50

Step by Step Solution

1. Step 1: Write the proportion equation
   400,069.50 : 868,825.50 = 868,825.50 : x
2. Step 2: Convert to fraction form
   400,069.50/868,825.50 = 868,825.50/x
3. Step 3: Cross multiply
   400,069.50x = 868,825.50 × 868,825.50
4. Step 4: Simplify right side
   400,069.50x = 754,857,749,450.25
5. Step 5: Solve for x
   x = 754,857,749,450.25/400,069.50
6. Step 6: Final answer
   x = 1,886,816.54