Finding the Third Proportional to 108,699 and 142,938

Step by Step Solution

1. Step 1: Write the proportion equation
   108,699 : 142,938 = 142,938 : x
2. Step 2: Convert to fraction form
   108,699/142,938 = 142,938/x
3. Step 3: Cross multiply
   108,699x = 142,938 × 142,938
4. Step 4: Simplify right side
   108,699x = 20,431,271,844
5. Step 5: Solve for x
   x = 20,431,271,844/108,699
6. Step 6: Final answer
   x = 187,961.91