Finding the Third Proportional to 8,902 and 13,321.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,902 : 13,321.50 = 13,321.50 : x
2. Step 2: Convert to fraction form
   8,902/13,321.50 = 13,321.50/x
3. Step 3: Cross multiply
   8,902x = 13,321.50 × 13,321.50
4. Step 4: Simplify right side
   8,902x = 177,462,362.25
5. Step 5: Solve for x
   x = 177,462,362.25/8,902
6. Step 6: Final answer
   x = 19,935.11