Finding the Third Proportional to 868,508 and 1,913,706

Step by Step Solution

1. Step 1: Write the proportion equation
   868,508 : 1,913,706 = 1,913,706 : x
2. Step 2: Convert to fraction form
   868,508/1,913,706 = 1,913,706/x
3. Step 3: Cross multiply
   868,508x = 1,913,706 × 1,913,706
4. Step 4: Simplify right side
   868,508x = 3,662,270,654,436
5. Step 5: Solve for x
   x = 3,662,270,654,436/868,508
6. Step 6: Final answer
   x = 4,216,737.96