Finding the Third Proportional to 20,412 and 32,490

Step by Step Solution

1. Step 1: Write the proportion equation
   20,412 : 32,490 = 32,490 : x
2. Step 2: Convert to fraction form
   20,412/32,490 = 32,490/x
3. Step 3: Cross multiply
   20,412x = 32,490 × 32,490
4. Step 4: Simplify right side
   20,412x = 1,055,600,100
5. Step 5: Solve for x
   x = 1,055,600,100/20,412
6. Step 6: Final answer
   x = 51,714.68