Finding the Third Proportional to 4,480,238 and 9,831,390

Step by Step Solution

1. Step 1: Write the proportion equation
   4,480,238 : 9,831,390 = 9,831,390 : x
2. Step 2: Convert to fraction form
   4,480,238/9,831,390 = 9,831,390/x
3. Step 3: Cross multiply
   4,480,238x = 9,831,390 × 9,831,390
4. Step 4: Simplify right side
   4,480,238x = 96,656,229,332,100
5. Step 5: Solve for x
   x = 96,656,229,332,100/4,480,238
6. Step 6: Final answer
   x = 21,573,905.08