Finding the Third Proportional to 79,128 and 105,699

Step by Step Solution

1. Step 1: Write the proportion equation
   79,128 : 105,699 = 105,699 : x
2. Step 2: Convert to fraction form
   79,128/105,699 = 105,699/x
3. Step 3: Cross multiply
   79,128x = 105,699 × 105,699
4. Step 4: Simplify right side
   79,128x = 11,172,278,601
5. Step 5: Solve for x
   x = 11,172,278,601/79,128
6. Step 6: Final answer
   x = 141,192.48