Finding the Third Proportional to 21,978.75 and 34,453.13

Step by Step Solution

1. Step 1: Write the proportion equation
   21,978.75 : 34,453.13 = 34,453.13 : x
2. Step 2: Convert to fraction form
   21,978.75/34,453.13 = 34,453.13/x
3. Step 3: Cross multiply
   21,978.75x = 34,453.13 × 34,453.13
4. Step 4: Simplify right side
   21,978.75x = 1,187,017,822.27
5. Step 5: Solve for x
   x = 1,187,017,822.27/21,978.75
6. Step 6: Final answer
   x = 54,007.52