Finding the Third Proportional to 10,503 and 13,528.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,503 : 13,528.50 = 13,528.50 : x
2. Step 2: Convert to fraction form
   10,503/13,528.50 = 13,528.50/x
3. Step 3: Cross multiply
   10,503x = 13,528.50 × 13,528.50
4. Step 4: Simplify right side
   10,503x = 183,020,312.25
5. Step 5: Solve for x
   x = 183,020,312.25/10,503
6. Step 6: Final answer
   x = 17,425.53