Finding the Third Proportional to 10,991.75 and 17,030.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,991.75 : 17,030.50 = 17,030.50 : x
2. Step 2: Convert to fraction form
   10,991.75/17,030.50 = 17,030.50/x
3. Step 3: Cross multiply
   10,991.75x = 17,030.50 × 17,030.50
4. Step 4: Simplify right side
   10,991.75x = 290,037,930.25
5. Step 5: Solve for x
   x = 290,037,930.25/10,991.75
6. Step 6: Final answer
   x = 26,386.87