Finding the Third Proportional to 5,319,678 and 8,424,876

Step by Step Solution

1. Step 1: Write the proportion equation
   5,319,678 : 8,424,876 = 8,424,876 : x
2. Step 2: Convert to fraction form
   5,319,678/8,424,876 = 8,424,876/x
3. Step 3: Cross multiply
   5,319,678x = 8,424,876 × 8,424,876
4. Step 4: Simplify right side
   5,319,678x = 70,978,535,615,376
5. Step 5: Solve for x
   x = 70,978,535,615,376/5,319,678
6. Step 6: Final answer
   x = 13,342,637.58