Finding the Third Proportional to 9,090,144 and 19,890,684

Step by Step Solution

1. Step 1: Write the proportion equation
   9,090,144 : 19,890,684 = 19,890,684 : x
2. Step 2: Convert to fraction form
   9,090,144/19,890,684 = 19,890,684/x
3. Step 3: Cross multiply
   9,090,144x = 19,890,684 × 19,890,684
4. Step 4: Simplify right side
   9,090,144x = 395,639,309,987,856
5. Step 5: Solve for x
   x = 395,639,309,987,856/9,090,144
6. Step 6: Final answer
   x = 43,523,987.08