Finding the Third Proportional to 4,193,454 and 9,172,040

Step by Step Solution

1. Step 1: Write the proportion equation
   4,193,454 : 9,172,040 = 9,172,040 : x
2. Step 2: Convert to fraction form
   4,193,454/9,172,040 = 9,172,040/x
3. Step 3: Cross multiply
   4,193,454x = 9,172,040 × 9,172,040
4. Step 4: Simplify right side
   4,193,454x = 84,126,317,761,600
5. Step 5: Solve for x
   x = 84,126,317,761,600/4,193,454
6. Step 6: Final answer
   x = 20,061,342.69