Finding the Third Proportional to 4,984,560 and 7,128,009

Step by Step Solution

1. Step 1: Write the proportion equation
   4,984,560 : 7,128,009 = 7,128,009 : x
2. Step 2: Convert to fraction form
   4,984,560/7,128,009 = 7,128,009/x
3. Step 3: Cross multiply
   4,984,560x = 7,128,009 × 7,128,009
4. Step 4: Simplify right side
   4,984,560x = 50,808,512,304,081
5. Step 5: Solve for x
   x = 50,808,512,304,081/4,984,560
6. Step 6: Final answer
   x = 10,193,179.00