Finding the Third Proportional to 4,839,400 and 7,428,288

Step by Step Solution

1. Step 1: Write the proportion equation
   4,839,400 : 7,428,288 = 7,428,288 : x
2. Step 2: Convert to fraction form
   4,839,400/7,428,288 = 7,428,288/x
3. Step 3: Cross multiply
   4,839,400x = 7,428,288 × 7,428,288
4. Step 4: Simplify right side
   4,839,400x = 55,179,462,610,944
5. Step 5: Solve for x
   x = 55,179,462,610,944/4,839,400
6. Step 6: Final answer
   x = 11,402,128.90