Finding the Third Proportional to 1,987,788 and 2,648,370

Step by Step Solution

1. Step 1: Write the proportion equation
   1,987,788 : 2,648,370 = 2,648,370 : x
2. Step 2: Convert to fraction form
   1,987,788/2,648,370 = 2,648,370/x
3. Step 3: Cross multiply
   1,987,788x = 2,648,370 × 2,648,370
4. Step 4: Simplify right side
   1,987,788x = 7,013,863,656,900
5. Step 5: Solve for x
   x = 7,013,863,656,900/1,987,788
6. Step 6: Final answer
   x = 3,528,476.71