Finding the Third Proportional to 868,212 and 1,861,015.50

Step by Step Solution

1. Step 1: Write the proportion equation
   868,212 : 1,861,015.50 = 1,861,015.50 : x
2. Step 2: Convert to fraction form
   868,212/1,861,015.50 = 1,861,015.50/x
3. Step 3: Cross multiply
   868,212x = 1,861,015.50 × 1,861,015.50
4. Step 4: Simplify right side
   868,212x = 3,463,378,691,240.25
5. Step 5: Solve for x
   x = 3,463,378,691,240.25/868,212
6. Step 6: Final answer
   x = 3,989,093.32