Finding the Third Proportional to 4,984,590 and 7,128,057

Step by Step Solution

1. Step 1: Write the proportion equation
   4,984,590 : 7,128,057 = 7,128,057 : x
2. Step 2: Convert to fraction form
   4,984,590/7,128,057 = 7,128,057/x
3. Step 3: Cross multiply
   4,984,590x = 7,128,057 × 7,128,057
4. Step 4: Simplify right side
   4,984,590x = 50,809,196,595,249
5. Step 5: Solve for x
   x = 50,809,196,595,249/4,984,590
6. Step 6: Final answer
   x = 10,193,254.93