Finding the Third Proportional to 4,505,172 and 9,329,724

Step by Step Solution

1. Step 1: Write the proportion equation
   4,505,172 : 9,329,724 = 9,329,724 : x
2. Step 2: Convert to fraction form
   4,505,172/9,329,724 = 9,329,724/x
3. Step 3: Cross multiply
   4,505,172x = 9,329,724 × 9,329,724
4. Step 4: Simplify right side
   4,505,172x = 87,043,749,916,176
5. Step 5: Solve for x
   x = 87,043,749,916,176/4,505,172
6. Step 6: Final answer
   x = 19,320,849.44