Finding the Third Proportional to 10,509.45 and 17,515.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,509.45 : 17,515.76 = 17,515.76 : x
2. Step 2: Convert to fraction form
   10,509.45/17,515.76 = 17,515.76/x
3. Step 3: Cross multiply
   10,509.45x = 17,515.76 × 17,515.76
4. Step 4: Simplify right side
   10,509.45x = 306,801,694.77
5. Step 5: Solve for x
   x = 306,801,694.77/10,509.45
6. Step 6: Final answer
   x = 29,192.93