Finding the Third Proportional to 85,146 and 128,898

Step by Step Solution

1. Step 1: Write the proportion equation
   85,146 : 128,898 = 128,898 : x
2. Step 2: Convert to fraction form
   85,146/128,898 = 128,898/x
3. Step 3: Cross multiply
   85,146x = 128,898 × 128,898
4. Step 4: Simplify right side
   85,146x = 16,614,694,404
5. Step 5: Solve for x
   x = 16,614,694,404/85,146
6. Step 6: Final answer
   x = 195,131.83