Finding the Third Proportional to 5,554,740 and 8,656,870

Step by Step Solution

1. Step 1: Write the proportion equation
   5,554,740 : 8,656,870 = 8,656,870 : x
2. Step 2: Convert to fraction form
   5,554,740/8,656,870 = 8,656,870/x
3. Step 3: Cross multiply
   5,554,740x = 8,656,870 × 8,656,870
4. Step 4: Simplify right side
   5,554,740x = 74,941,398,196,900
5. Step 5: Solve for x
   x = 74,941,398,196,900/5,554,740
6. Step 6: Final answer
   x = 13,491,432.22