Finding the Third Proportional to 21,955.50 and 53,066.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,955.50 : 53,066.25 = 53,066.25 : x
2. Step 2: Convert to fraction form
   21,955.50/53,066.25 = 53,066.25/x
3. Step 3: Cross multiply
   21,955.50x = 53,066.25 × 53,066.25
4. Step 4: Simplify right side
   21,955.50x = 2,816,026,889.06
5. Step 5: Solve for x
   x = 2,816,026,889.06/21,955.50
6. Step 6: Final answer
   x = 128,260.66