Finding the Third Proportional to 5,663,740 and 8,493,990

Step by Step Solution

1. Step 1: Write the proportion equation
   5,663,740 : 8,493,990 = 8,493,990 : x
2. Step 2: Convert to fraction form
   5,663,740/8,493,990 = 8,493,990/x
3. Step 3: Cross multiply
   5,663,740x = 8,493,990 × 8,493,990
4. Step 4: Simplify right side
   5,663,740x = 72,147,866,120,100
5. Step 5: Solve for x
   x = 72,147,866,120,100/5,663,740
6. Step 6: Final answer
   x = 12,738,555.46