Finding the Third Proportional to 4,243,968 and 8,271,360

Step by Step Solution

1. Step 1: Write the proportion equation
   4,243,968 : 8,271,360 = 8,271,360 : x
2. Step 2: Convert to fraction form
   4,243,968/8,271,360 = 8,271,360/x
3. Step 3: Cross multiply
   4,243,968x = 8,271,360 × 8,271,360
4. Step 4: Simplify right side
   4,243,968x = 68,415,396,249,600
5. Step 5: Solve for x
   x = 68,415,396,249,600/4,243,968
6. Step 6: Final answer
   x = 16,120,620.20