Finding the Third Proportional to 4,287,564 and 9,196,790

Step by Step Solution

1. Step 1: Write the proportion equation
   4,287,564 : 9,196,790 = 9,196,790 : x
2. Step 2: Convert to fraction form
   4,287,564/9,196,790 = 9,196,790/x
3. Step 3: Cross multiply
   4,287,564x = 9,196,790 × 9,196,790
4. Step 4: Simplify right side
   4,287,564x = 84,580,946,304,100
5. Step 5: Solve for x
   x = 84,580,946,304,100/4,287,564
6. Step 6: Final answer
   x = 19,727,039.95