Finding the Third Proportional to 4,209,576 and 9,258,960

Step by Step Solution

1. Step 1: Write the proportion equation
   4,209,576 : 9,258,960 = 9,258,960 : x
2. Step 2: Convert to fraction form
   4,209,576/9,258,960 = 9,258,960/x
3. Step 3: Cross multiply
   4,209,576x = 9,258,960 × 9,258,960
4. Step 4: Simplify right side
   4,209,576x = 85,728,340,281,600
5. Step 5: Solve for x
   x = 85,728,340,281,600/4,209,576
6. Step 6: Final answer
   x = 20,365,077.21