Finding the Third Proportional to 10,212.75 and 10,915.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,212.75 : 10,915.88 = 10,915.88 : x
2. Step 2: Convert to fraction form
   10,212.75/10,915.88 = 10,915.88/x
3. Step 3: Cross multiply
   10,212.75x = 10,915.88 × 10,915.88
4. Step 4: Simplify right side
   10,212.75x = 119,156,327.02
5. Step 5: Solve for x
   x = 119,156,327.02/10,212.75
6. Step 6: Final answer
   x = 11,667.41