Finding the Third Proportional to 3,564,840 and 7,423,440

Step by Step Solution

1. Step 1: Write the proportion equation
   3,564,840 : 7,423,440 = 7,423,440 : x
2. Step 2: Convert to fraction form
   3,564,840/7,423,440 = 7,423,440/x
3. Step 3: Cross multiply
   3,564,840x = 7,423,440 × 7,423,440
4. Step 4: Simplify right side
   3,564,840x = 55,107,461,433,600
5. Step 5: Solve for x
   x = 55,107,461,433,600/3,564,840
6. Step 6: Final answer
   x = 15,458,607.24