Finding the Third Proportional to 10,107.50 and 20,715

Step by Step Solution

1. Step 1: Write the proportion equation
   10,107.50 : 20,715 = 20,715 : x
2. Step 2: Convert to fraction form
   10,107.50/20,715 = 20,715/x
3. Step 3: Cross multiply
   10,107.50x = 20,715 × 20,715
4. Step 4: Simplify right side
   10,107.50x = 429,111,225
5. Step 5: Solve for x
   x = 429,111,225/10,107.50
6. Step 6: Final answer
   x = 42,454.73