Finding the Third Proportional to 873,636 and 1,868,718

Step by Step Solution

1. Step 1: Write the proportion equation
   873,636 : 1,868,718 = 1,868,718 : x
2. Step 2: Convert to fraction form
   873,636/1,868,718 = 1,868,718/x
3. Step 3: Cross multiply
   873,636x = 1,868,718 × 1,868,718
4. Step 4: Simplify right side
   873,636x = 3,492,106,963,524
5. Step 5: Solve for x
   x = 3,492,106,963,524/873,636
6. Step 6: Final answer
   x = 3,997,210.47