Finding the Third Proportional to 21,157 and 45,499

Step by Step Solution

1. Step 1: Write the proportion equation
   21,157 : 45,499 = 45,499 : x
2. Step 2: Convert to fraction form
   21,157/45,499 = 45,499/x
3. Step 3: Cross multiply
   21,157x = 45,499 × 45,499
4. Step 4: Simplify right side
   21,157x = 2,070,159,001
5. Step 5: Solve for x
   x = 2,070,159,001/21,157
6. Step 6: Final answer
   x = 97,847.47