Finding the Third Proportional to 1,388,988 and 2,948,508

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388,988 : 2,948,508 = 2,948,508 : x
2. Step 2: Convert to fraction form
   1,388,988/2,948,508 = 2,948,508/x
3. Step 3: Cross multiply
   1,388,988x = 2,948,508 × 2,948,508
4. Step 4: Simplify right side
   1,388,988x = 8,693,699,426,064
5. Step 5: Solve for x
   x = 8,693,699,426,064/1,388,988
6. Step 6: Final answer
   x = 6,259,016.94