Finding the Third Proportional to 3,640,556 and 7,916,488

Step by Step Solution

1. Step 1: Write the proportion equation
   3,640,556 : 7,916,488 = 7,916,488 : x
2. Step 2: Convert to fraction form
   3,640,556/7,916,488 = 7,916,488/x
3. Step 3: Cross multiply
   3,640,556x = 7,916,488 × 7,916,488
4. Step 4: Simplify right side
   3,640,556x = 62,670,782,254,144
5. Step 5: Solve for x
   x = 62,670,782,254,144/3,640,556
6. Step 6: Final answer
   x = 17,214,618.39