Finding the Third Proportional to 4,787,790 and 10,239,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   4,787,790 : 10,239,131.50 = 10,239,131.50 : x
2. Step 2: Convert to fraction form
   4,787,790/10,239,131.50 = 10,239,131.50/x
3. Step 3: Cross multiply
   4,787,790x = 10,239,131.50 × 10,239,131.50
4. Step 4: Simplify right side
   4,787,790x = 104,839,813,874,292.25
5. Step 5: Solve for x
   x = 104,839,813,874,292.25/4,787,790
6. Step 6: Final answer
   x = 21,897,329.22