Finding the Third Proportional to 10,108 and 20,715.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,108 : 20,715.75 = 20,715.75 : x
2. Step 2: Convert to fraction form
   10,108/20,715.75 = 20,715.75/x
3. Step 3: Cross multiply
   10,108x = 20,715.75 × 20,715.75
4. Step 4: Simplify right side
   10,108x = 429,142,298.06
5. Step 5: Solve for x
   x = 429,142,298.06/10,108
6. Step 6: Final answer
   x = 42,455.71