Finding the Third Proportional to 5,101.88 and 10,384.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,101.88 : 10,384.31 = 10,384.31 : x
2. Step 2: Convert to fraction form
   5,101.88/10,384.31 = 10,384.31/x
3. Step 3: Cross multiply
   5,101.88x = 10,384.31 × 10,384.31
4. Step 4: Simplify right side
   5,101.88x = 107,833,946.10
5. Step 5: Solve for x
   x = 107,833,946.10/5,101.88
6. Step 6: Final answer
   x = 21,136.14