Finding the Third Proportional to 620,268 and 1,315,816

Step by Step Solution

1. Step 1: Write the proportion equation
   620,268 : 1,315,816 = 1,315,816 : x
2. Step 2: Convert to fraction form
   620,268/1,315,816 = 1,315,816/x
3. Step 3: Cross multiply
   620,268x = 1,315,816 × 1,315,816
4. Step 4: Simplify right side
   620,268x = 1,731,371,745,856
5. Step 5: Solve for x
   x = 1,731,371,745,856/620,268
6. Step 6: Final answer
   x = 2,791,328.50