Finding the Third Proportional to 873,630 and 1,868,706

Step by Step Solution

1. Step 1: Write the proportion equation
   873,630 : 1,868,706 = 1,868,706 : x
2. Step 2: Convert to fraction form
   873,630/1,868,706 = 1,868,706/x
3. Step 3: Cross multiply
   873,630x = 1,868,706 × 1,868,706
4. Step 4: Simplify right side
   873,630x = 3,492,062,114,436
5. Step 5: Solve for x
   x = 3,492,062,114,436/873,630
6. Step 6: Final answer
   x = 3,997,186.58