Finding the Third Proportional to 5,319,690 and 8,424,888

Step by Step Solution

1. Step 1: Write the proportion equation
   5,319,690 : 8,424,888 = 8,424,888 : x
2. Step 2: Convert to fraction form
   5,319,690/8,424,888 = 8,424,888/x
3. Step 3: Cross multiply
   5,319,690x = 8,424,888 × 8,424,888
4. Step 4: Simplify right side
   5,319,690x = 70,978,737,812,544
5. Step 5: Solve for x
   x = 70,978,737,812,544/5,319,690
6. Step 6: Final answer
   x = 13,342,645.49