Finding the Third Proportional to 791,606 and 1,866,821

Step by Step Solution

1. Step 1: Write the proportion equation
   791,606 : 1,866,821 = 1,866,821 : x
2. Step 2: Convert to fraction form
   791,606/1,866,821 = 1,866,821/x
3. Step 3: Cross multiply
   791,606x = 1,866,821 × 1,866,821
4. Step 4: Simplify right side
   791,606x = 3,485,020,646,041
5. Step 5: Solve for x
   x = 3,485,020,646,041/791,606
6. Step 6: Final answer
   x = 4,402,468.71