Finding the Third Proportional to 4,915,289 and 7,631,729

Step by Step Solution

1. Step 1: Write the proportion equation
   4,915,289 : 7,631,729 = 7,631,729 : x
2. Step 2: Convert to fraction form
   4,915,289/7,631,729 = 7,631,729/x
3. Step 3: Cross multiply
   4,915,289x = 7,631,729 × 7,631,729
4. Step 4: Simplify right side
   4,915,289x = 58,243,287,529,441
5. Step 5: Solve for x
   x = 58,243,287,529,441/4,915,289
6. Step 6: Final answer
   x = 11,849,412.62