Finding the Third Proportional to 3,879,294 and 8,430,078

Step by Step Solution

1. Step 1: Write the proportion equation
   3,879,294 : 8,430,078 = 8,430,078 : x
2. Step 2: Convert to fraction form
   3,879,294/8,430,078 = 8,430,078/x
3. Step 3: Cross multiply
   3,879,294x = 8,430,078 × 8,430,078
4. Step 4: Simplify right side
   3,879,294x = 71,066,215,086,084
5. Step 5: Solve for x
   x = 71,066,215,086,084/3,879,294
6. Step 6: Final answer
   x = 18,319,368.19