Finding the Third Proportional to 10,957.81 and 15,505.22

Step by Step Solution

1. Step 1: Write the proportion equation
   10,957.81 : 15,505.22 = 15,505.22 : x
2. Step 2: Convert to fraction form
   10,957.81/15,505.22 = 15,505.22/x
3. Step 3: Cross multiply
   10,957.81x = 15,505.22 × 15,505.22
4. Step 4: Simplify right side
   10,957.81x = 240,411,808.49
5. Step 5: Solve for x
   x = 240,411,808.49/10,957.81
6. Step 6: Final answer
   x = 21,939.76