Finding the Third Proportional to 21,436 and 51,634

Step by Step Solution

1. Step 1: Write the proportion equation
   21,436 : 51,634 = 51,634 : x
2. Step 2: Convert to fraction form
   21,436/51,634 = 51,634/x
3. Step 3: Cross multiply
   21,436x = 51,634 × 51,634
4. Step 4: Simplify right side
   21,436x = 2,666,069,956
5. Step 5: Solve for x
   x = 2,666,069,956/21,436
6. Step 6: Final answer
   x = 124,373.48