Finding the Third Proportional to 18,729 and 42,654

Step by Step Solution

1. Step 1: Write the proportion equation
   18,729 : 42,654 = 42,654 : x
2. Step 2: Convert to fraction form
   18,729/42,654 = 42,654/x
3. Step 3: Cross multiply
   18,729x = 42,654 × 42,654
4. Step 4: Simplify right side
   18,729x = 1,819,363,716
5. Step 5: Solve for x
   x = 1,819,363,716/18,729
6. Step 6: Final answer
   x = 97,141.53