Finding the Third Proportional to 4,789,206 and 10,242,540

Step by Step Solution

1. Step 1: Write the proportion equation
   4,789,206 : 10,242,540 = 10,242,540 : x
2. Step 2: Convert to fraction form
   4,789,206/10,242,540 = 10,242,540/x
3. Step 3: Cross multiply
   4,789,206x = 10,242,540 × 10,242,540
4. Step 4: Simplify right side
   4,789,206x = 104,909,625,651,600
5. Step 5: Solve for x
   x = 104,909,625,651,600/4,789,206
6. Step 6: Final answer
   x = 21,905,431.85