Finding the Third Proportional to 10,990 and 23,438

Step by Step Solution

1. Step 1: Write the proportion equation
   10,990 : 23,438 = 23,438 : x
2. Step 2: Convert to fraction form
   10,990/23,438 = 23,438/x
3. Step 3: Cross multiply
   10,990x = 23,438 × 23,438
4. Step 4: Simplify right side
   10,990x = 549,339,844
5. Step 5: Solve for x
   x = 549,339,844/10,990
6. Step 6: Final answer
   x = 49,985.43