Finding the Third Proportional to 5,554,158 and 8,400,898

Step by Step Solution

1. Step 1: Write the proportion equation
   5,554,158 : 8,400,898 = 8,400,898 : x
2. Step 2: Convert to fraction form
   5,554,158/8,400,898 = 8,400,898/x
3. Step 3: Cross multiply
   5,554,158x = 8,400,898 × 8,400,898
4. Step 4: Simplify right side
   5,554,158x = 70,575,087,206,404
5. Step 5: Solve for x
   x = 70,575,087,206,404/5,554,158
6. Step 6: Final answer
   x = 12,706,712.20