Finding the Third Proportional to 15,322 and 21,099.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,322 : 21,099.50 = 21,099.50 : x
2. Step 2: Convert to fraction form
   15,322/21,099.50 = 21,099.50/x
3. Step 3: Cross multiply
   15,322x = 21,099.50 × 21,099.50
4. Step 4: Simplify right side
   15,322x = 445,188,900.25
5. Step 5: Solve for x
   x = 445,188,900.25/15,322
6. Step 6: Final answer
   x = 29,055.53