Finding the Third Proportional to 4,505,142 and 9,329,661

Step by Step Solution

1. Step 1: Write the proportion equation
   4,505,142 : 9,329,661 = 9,329,661 : x
2. Step 2: Convert to fraction form
   4,505,142/9,329,661 = 9,329,661/x
3. Step 3: Cross multiply
   4,505,142x = 9,329,661 × 9,329,661
4. Step 4: Simplify right side
   4,505,142x = 87,042,574,374,921
5. Step 5: Solve for x
   x = 87,042,574,374,921/4,505,142
6. Step 6: Final answer
   x = 19,320,717.17