Finding the Third Proportional to 1,239,913 and 2,628,620

Step by Step Solution

1. Step 1: Write the proportion equation
   1,239,913 : 2,628,620 = 2,628,620 : x
2. Step 2: Convert to fraction form
   1,239,913/2,628,620 = 2,628,620/x
3. Step 3: Cross multiply
   1,239,913x = 2,628,620 × 2,628,620
4. Step 4: Simplify right side
   1,239,913x = 6,909,643,104,400
5. Step 5: Solve for x
   x = 6,909,643,104,400/1,239,913
6. Step 6: Final answer
   x = 5,572,683.81