Finding the Third Proportional to 10,221,768 and 21,861,804

Step by Step Solution

1. Step 1: Write the proportion equation
   10,221,768 : 21,861,804 = 21,861,804 : x
2. Step 2: Convert to fraction form
   10,221,768/21,861,804 = 21,861,804/x
3. Step 3: Cross multiply
   10,221,768x = 21,861,804 × 21,861,804
4. Step 4: Simplify right side
   10,221,768x = 477,938,474,134,416
5. Step 5: Solve for x
   x = 477,938,474,134,416/10,221,768
6. Step 6: Final answer
   x = 46,756,928.36