Finding the Third Proportional to 4,206,146 and 9,150,403

Step by Step Solution

1. Step 1: Write the proportion equation
   4,206,146 : 9,150,403 = 9,150,403 : x
2. Step 2: Convert to fraction form
   4,206,146/9,150,403 = 9,150,403/x
3. Step 3: Cross multiply
   4,206,146x = 9,150,403 × 9,150,403
4. Step 4: Simplify right side
   4,206,146x = 83,729,875,062,409
5. Step 5: Solve for x
   x = 83,729,875,062,409/4,206,146
6. Step 6: Final answer
   x = 19,906,554.61