Finding the Third Proportional to 21,186.56 and 57,636.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,186.56 : 57,636.56 = 57,636.56 : x
2. Step 2: Convert to fraction form
   21,186.56/57,636.56 = 57,636.56/x
3. Step 3: Cross multiply
   21,186.56x = 57,636.56 × 57,636.56
4. Step 4: Simplify right side
   21,186.56x = 3,321,973,336.82
5. Step 5: Solve for x
   x = 3,321,973,336.82/21,186.56
6. Step 6: Final answer
   x = 156,796.24