Finding the Third Proportional to 872,386 and 1,878,404

Step by Step Solution

1. Step 1: Write the proportion equation
   872,386 : 1,878,404 = 1,878,404 : x
2. Step 2: Convert to fraction form
   872,386/1,878,404 = 1,878,404/x
3. Step 3: Cross multiply
   872,386x = 1,878,404 × 1,878,404
4. Step 4: Simplify right side
   872,386x = 3,528,401,587,216
5. Step 5: Solve for x
   x = 3,528,401,587,216/872,386
6. Step 6: Final answer
   x = 4,044,541.74