Finding the Third Proportional to 21,128.50 and 32,479

Step by Step Solution

1. Step 1: Write the proportion equation
   21,128.50 : 32,479 = 32,479 : x
2. Step 2: Convert to fraction form
   21,128.50/32,479 = 32,479/x
3. Step 3: Cross multiply
   21,128.50x = 32,479 × 32,479
4. Step 4: Simplify right side
   21,128.50x = 1,054,885,441
5. Step 5: Solve for x
   x = 1,054,885,441/21,128.50
6. Step 6: Final answer
   x = 49,927.13