Finding the Third Proportional to 18,978.47 and 45,327.09

Step by Step Solution

1. Step 1: Write the proportion equation
   18,978.47 : 45,327.09 = 45,327.09 : x
2. Step 2: Convert to fraction form
   18,978.47/45,327.09 = 45,327.09/x
3. Step 3: Cross multiply
   18,978.47x = 45,327.09 × 45,327.09
4. Step 4: Simplify right side
   18,978.47x = 2,054,545,427.82
5. Step 5: Solve for x
   x = 2,054,545,427.82/18,978.47
6. Step 6: Final answer
   x = 108,256.65