Finding the Third Proportional to 3,492,872 and 5,217,740

Step by Step Solution

1. Step 1: Write the proportion equation
   3,492,872 : 5,217,740 = 5,217,740 : x
2. Step 2: Convert to fraction form
   3,492,872/5,217,740 = 5,217,740/x
3. Step 3: Cross multiply
   3,492,872x = 5,217,740 × 5,217,740
4. Step 4: Simplify right side
   3,492,872x = 27,224,810,707,600
5. Step 5: Solve for x
   x = 27,224,810,707,600/3,492,872
6. Step 6: Final answer
   x = 7,794,391.18