Finding the Third Proportional to 873,628 and 1,868,697

Step by Step Solution

1. Step 1: Write the proportion equation
   873,628 : 1,868,697 = 1,868,697 : x
2. Step 2: Convert to fraction form
   873,628/1,868,697 = 1,868,697/x
3. Step 3: Cross multiply
   873,628x = 1,868,697 × 1,868,697
4. Step 4: Simplify right side
   873,628x = 3,492,028,477,809
5. Step 5: Solve for x
   x = 3,492,028,477,809/873,628
6. Step 6: Final answer
   x = 3,997,157.23