Finding the Third Proportional to 8,910 and 10,813.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,910 : 10,813.50 = 10,813.50 : x
2. Step 2: Convert to fraction form
   8,910/10,813.50 = 10,813.50/x
3. Step 3: Cross multiply
   8,910x = 10,813.50 × 10,813.50
4. Step 4: Simplify right side
   8,910x = 116,931,782.25
5. Step 5: Solve for x
   x = 116,931,782.25/8,910
6. Step 6: Final answer
   x = 13,123.66