Finding the Third Proportional to 4,505,145 and 9,329,664

Step by Step Solution

1. Step 1: Write the proportion equation
   4,505,145 : 9,329,664 = 9,329,664 : x
2. Step 2: Convert to fraction form
   4,505,145/9,329,664 = 9,329,664/x
3. Step 3: Cross multiply
   4,505,145x = 9,329,664 × 9,329,664
4. Step 4: Simplify right side
   4,505,145x = 87,042,630,352,896
5. Step 5: Solve for x
   x = 87,042,630,352,896/4,505,145
6. Step 6: Final answer
   x = 19,320,716.73