Finding the Third Proportional to 4,901,987 and 7,188,172

Step by Step Solution

1. Step 1: Write the proportion equation
   4,901,987 : 7,188,172 = 7,188,172 : x
2. Step 2: Convert to fraction form
   4,901,987/7,188,172 = 7,188,172/x
3. Step 3: Cross multiply
   4,901,987x = 7,188,172 × 7,188,172
4. Step 4: Simplify right side
   4,901,987x = 51,669,816,701,584
5. Step 5: Solve for x
   x = 51,669,816,701,584/4,901,987
6. Step 6: Final answer
   x = 10,540,586.24