Finding the Third Proportional to 853,068 and 1,866,840

Step by Step Solution

1. Step 1: Write the proportion equation
   853,068 : 1,866,840 = 1,866,840 : x
2. Step 2: Convert to fraction form
   853,068/1,866,840 = 1,866,840/x
3. Step 3: Cross multiply
   853,068x = 1,866,840 × 1,866,840
4. Step 4: Simplify right side
   853,068x = 3,485,091,585,600
5. Step 5: Solve for x
   x = 3,485,091,585,600/853,068
6. Step 6: Final answer
   x = 4,085,361.99