Finding the Third Proportional to 9,991.50 and 15,012.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,991.50 : 15,012.50 = 15,012.50 : x
2. Step 2: Convert to fraction form
   9,991.50/15,012.50 = 15,012.50/x
3. Step 3: Cross multiply
   9,991.50x = 15,012.50 × 15,012.50
4. Step 4: Simplify right side
   9,991.50x = 225,375,156.25
5. Step 5: Solve for x
   x = 225,375,156.25/9,991.50
6. Step 6: Final answer
   x = 22,556.69