Finding the Third Proportional to 1,286,236 and 1,993,641

Step by Step Solution

1. Step 1: Write the proportion equation
   1,286,236 : 1,993,641 = 1,993,641 : x
2. Step 2: Convert to fraction form
   1,286,236/1,993,641 = 1,993,641/x
3. Step 3: Cross multiply
   1,286,236x = 1,993,641 × 1,993,641
4. Step 4: Simplify right side
   1,286,236x = 3,974,604,436,881
5. Step 5: Solve for x
   x = 3,974,604,436,881/1,286,236
6. Step 6: Final answer
   x = 3,090,105.11