Finding the Third Proportional to 5,272.50 and 10,450.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,272.50 : 10,450.50 = 10,450.50 : x
2. Step 2: Convert to fraction form
   5,272.50/10,450.50 = 10,450.50/x
3. Step 3: Cross multiply
   5,272.50x = 10,450.50 × 10,450.50
4. Step 4: Simplify right side
   5,272.50x = 109,212,950.25
5. Step 5: Solve for x
   x = 109,212,950.25/5,272.50
6. Step 6: Final answer
   x = 20,713.69