Finding the Third Proportional to 8,865 and 12,412.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,865 : 12,412.50 = 12,412.50 : x
2. Step 2: Convert to fraction form
   8,865/12,412.50 = 12,412.50/x
3. Step 3: Cross multiply
   8,865x = 12,412.50 × 12,412.50
4. Step 4: Simplify right side
   8,865x = 154,070,156.25
5. Step 5: Solve for x
   x = 154,070,156.25/8,865
6. Step 6: Final answer
   x = 17,379.60