Finding the Third Proportional to 8,145 and 21,451.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,145 : 21,451.50 = 21,451.50 : x
2. Step 2: Convert to fraction form
   8,145/21,451.50 = 21,451.50/x
3. Step 3: Cross multiply
   8,145x = 21,451.50 × 21,451.50
4. Step 4: Simplify right side
   8,145x = 460,166,852.25
5. Step 5: Solve for x
   x = 460,166,852.25/8,145
6. Step 6: Final answer
   x = 56,496.85