Finding the Third Proportional to 4,788,978 and 7,435,286

Step by Step Solution

1. Step 1: Write the proportion equation
   4,788,978 : 7,435,286 = 7,435,286 : x
2. Step 2: Convert to fraction form
   4,788,978/7,435,286 = 7,435,286/x
3. Step 3: Cross multiply
   4,788,978x = 7,435,286 × 7,435,286
4. Step 4: Simplify right side
   4,788,978x = 55,283,477,901,796
5. Step 5: Solve for x
   x = 55,283,477,901,796/4,788,978
6. Step 6: Final answer
   x = 11,543,898.91