Finding the Third Proportional to 4,839,472 and 7,428,406

Step by Step Solution

1. Step 1: Write the proportion equation
   4,839,472 : 7,428,406 = 7,428,406 : x
2. Step 2: Convert to fraction form
   4,839,472/7,428,406 = 7,428,406/x
3. Step 3: Cross multiply
   4,839,472x = 7,428,406 × 7,428,406
4. Step 4: Simplify right side
   4,839,472x = 55,181,215,700,836
5. Step 5: Solve for x
   x = 55,181,215,700,836/4,839,472
6. Step 6: Final answer
   x = 11,402,321.51