Finding the Third Proportional to 3,564,830 and 7,423,420

Step by Step Solution

1. Step 1: Write the proportion equation
   3,564,830 : 7,423,420 = 7,423,420 : x
2. Step 2: Convert to fraction form
   3,564,830/7,423,420 = 7,423,420/x
3. Step 3: Cross multiply
   3,564,830x = 7,423,420 × 7,423,420
4. Step 4: Simplify right side
   3,564,830x = 55,107,164,496,400
5. Step 5: Solve for x
   x = 55,107,164,496,400/3,564,830
6. Step 6: Final answer
   x = 15,458,567.31