Finding the Third Proportional to 4,861.69 and 10,213.31

Step by Step Solution

1. Step 1: Write the proportion equation
   4,861.69 : 10,213.31 = 10,213.31 : x
2. Step 2: Convert to fraction form
   4,861.69/10,213.31 = 10,213.31/x
3. Step 3: Cross multiply
   4,861.69x = 10,213.31 × 10,213.31
4. Step 4: Simplify right side
   4,861.69x = 104,311,752.22
5. Step 5: Solve for x
   x = 104,311,752.22/4,861.69
6. Step 6: Final answer
   x = 21,455.87