Finding the Third Proportional to 4,505,780 and 9,384,376

Step by Step Solution

1. Step 1: Write the proportion equation
   4,505,780 : 9,384,376 = 9,384,376 : x
2. Step 2: Convert to fraction form
   4,505,780/9,384,376 = 9,384,376/x
3. Step 3: Cross multiply
   4,505,780x = 9,384,376 × 9,384,376
4. Step 4: Simplify right side
   4,505,780x = 88,066,512,909,376
5. Step 5: Solve for x
   x = 88,066,512,909,376/4,505,780
6. Step 6: Final answer
   x = 19,545,231.44