Finding the Third Proportional to 21,415.50 and 44,320.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,415.50 : 44,320.50 = 44,320.50 : x
2. Step 2: Convert to fraction form
   21,415.50/44,320.50 = 44,320.50/x
3. Step 3: Cross multiply
   21,415.50x = 44,320.50 × 44,320.50
4. Step 4: Simplify right side
   21,415.50x = 1,964,306,720.25
5. Step 5: Solve for x
   x = 1,964,306,720.25/21,415.50
6. Step 6: Final answer
   x = 91,723.60