Finding the Third Proportional to 4,157,488 and 9,109,424

Step by Step Solution

1. Step 1: Write the proportion equation
   4,157,488 : 9,109,424 = 9,109,424 : x
2. Step 2: Convert to fraction form
   4,157,488/9,109,424 = 9,109,424/x
3. Step 3: Cross multiply
   4,157,488x = 9,109,424 × 9,109,424
4. Step 4: Simplify right side
   4,157,488x = 82,981,605,611,776
5. Step 5: Solve for x
   x = 82,981,605,611,776/4,157,488
6. Step 6: Final answer
   x = 19,959,553.85