Finding the Third Proportional to 21,389.63 and 44,142.75

Step by Step Solution

1. Step 1: Write the proportion equation
   21,389.63 : 44,142.75 = 44,142.75 : x
2. Step 2: Convert to fraction form
   21,389.63/44,142.75 = 44,142.75/x
3. Step 3: Cross multiply
   21,389.63x = 44,142.75 × 44,142.75
4. Step 4: Simplify right side
   21,389.63x = 1,948,582,377.56
5. Step 5: Solve for x
   x = 1,948,582,377.56/21,389.63
6. Step 6: Final answer
   x = 91,099.42