Finding the Third Proportional to 3,564,821 and 7,423,400

Step by Step Solution

1. Step 1: Write the proportion equation
   3,564,821 : 7,423,400 = 7,423,400 : x
2. Step 2: Convert to fraction form
   3,564,821/7,423,400 = 7,423,400/x
3. Step 3: Cross multiply
   3,564,821x = 7,423,400 × 7,423,400
4. Step 4: Simplify right side
   3,564,821x = 55,106,867,560,000
5. Step 5: Solve for x
   x = 55,106,867,560,000/3,564,821
6. Step 6: Final answer
   x = 15,458,523.04