Finding the Third Proportional to 10,918.50 and 17,316.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,918.50 : 17,316.50 = 17,316.50 : x
2. Step 2: Convert to fraction form
   10,918.50/17,316.50 = 17,316.50/x
3. Step 3: Cross multiply
   10,918.50x = 17,316.50 × 17,316.50
4. Step 4: Simplify right side
   10,918.50x = 299,861,172.25
5. Step 5: Solve for x
   x = 299,861,172.25/10,918.50
6. Step 6: Final answer
   x = 27,463.59