Finding the Third Proportional to 868,221 and 1,861,032

Step by Step Solution

1. Step 1: Write the proportion equation
   868,221 : 1,861,032 = 1,861,032 : x
2. Step 2: Convert to fraction form
   868,221/1,861,032 = 1,861,032/x
3. Step 3: Cross multiply
   868,221x = 1,861,032 × 1,861,032
4. Step 4: Simplify right side
   868,221x = 3,463,440,105,024
5. Step 5: Solve for x
   x = 3,463,440,105,024/868,221
6. Step 6: Final answer
   x = 3,989,122.71