Finding the Third Proportional to 21,968.50 and 51,809.75

Step by Step Solution

1. Step 1: Write the proportion equation
   21,968.50 : 51,809.75 = 51,809.75 : x
2. Step 2: Convert to fraction form
   21,968.50/51,809.75 = 51,809.75/x
3. Step 3: Cross multiply
   21,968.50x = 51,809.75 × 51,809.75
4. Step 4: Simplify right side
   21,968.50x = 2,684,250,195.06
5. Step 5: Solve for x
   x = 2,684,250,195.06/21,968.50
6. Step 6: Final answer
   x = 122,186.32