Finding the Third Proportional to 8,758 and 10,398.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,758 : 10,398.50 = 10,398.50 : x
2. Step 2: Convert to fraction form
   8,758/10,398.50 = 10,398.50/x
3. Step 3: Cross multiply
   8,758x = 10,398.50 × 10,398.50
4. Step 4: Simplify right side
   8,758x = 108,128,802.25
5. Step 5: Solve for x
   x = 108,128,802.25/8,758
6. Step 6: Final answer
   x = 12,346.29