Finding the Third Proportional to 5,509,870 and 12,866,452

Step by Step Solution

1. Step 1: Write the proportion equation
   5,509,870 : 12,866,452 = 12,866,452 : x
2. Step 2: Convert to fraction form
   5,509,870/12,866,452 = 12,866,452/x
3. Step 3: Cross multiply
   5,509,870x = 12,866,452 × 12,866,452
4. Step 4: Simplify right side
   5,509,870x = 165,545,587,068,304
5. Step 5: Solve for x
   x = 165,545,587,068,304/5,509,870
6. Step 6: Final answer
   x = 30,045,280.03