Finding the Third Proportional to 1,916,243 and 4,172,686

Step by Step Solution

1. Step 1: Write the proportion equation
   1,916,243 : 4,172,686 = 4,172,686 : x
2. Step 2: Convert to fraction form
   1,916,243/4,172,686 = 4,172,686/x
3. Step 3: Cross multiply
   1,916,243x = 4,172,686 × 4,172,686
4. Step 4: Simplify right side
   1,916,243x = 17,411,308,454,596
5. Step 5: Solve for x
   x = 17,411,308,454,596/1,916,243
6. Step 6: Final answer
   x = 9,086,169.37