Finding the Third Proportional to 3,556,396 and 7,787,360

Step by Step Solution

1. Step 1: Write the proportion equation
   3,556,396 : 7,787,360 = 7,787,360 : x
2. Step 2: Convert to fraction form
   3,556,396/7,787,360 = 7,787,360/x
3. Step 3: Cross multiply
   3,556,396x = 7,787,360 × 7,787,360
4. Step 4: Simplify right side
   3,556,396x = 60,642,975,769,600
5. Step 5: Solve for x
   x = 60,642,975,769,600/3,556,396
6. Step 6: Final answer
   x = 17,051,806.31