Finding the Third Proportional to 868,320 and 1,861,245

Step by Step Solution

1. Step 1: Write the proportion equation
   868,320 : 1,861,245 = 1,861,245 : x
2. Step 2: Convert to fraction form
   868,320/1,861,245 = 1,861,245/x
3. Step 3: Cross multiply
   868,320x = 1,861,245 × 1,861,245
4. Step 4: Simplify right side
   868,320x = 3,464,232,950,025
5. Step 5: Solve for x
   x = 3,464,232,950,025/868,320
6. Step 6: Final answer
   x = 3,989,580.97