Finding the Third Proportional to 10,221,678.50 and 21,861,626.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,221,678.50 : 21,861,626.50 = 21,861,626.50 : x
2. Step 2: Convert to fraction form
   10,221,678.50/21,861,626.50 = 21,861,626.50/x
3. Step 3: Cross multiply
   10,221,678.50x = 21,861,626.50 × 21,861,626.50
4. Step 4: Simplify right side
   10,221,678.50x = 477,930,713,225,502.25
5. Step 5: Solve for x
   x = 477,930,713,225,502.25/10,221,678.50
6. Step 6: Final answer
   x = 46,756,578.50