Finding the Third Proportional to 67,158 and 102,690

Step by Step Solution

1. Step 1: Write the proportion equation
   67,158 : 102,690 = 102,690 : x
2. Step 2: Convert to fraction form
   67,158/102,690 = 102,690/x
3. Step 3: Cross multiply
   67,158x = 102,690 × 102,690
4. Step 4: Simplify right side
   67,158x = 10,545,236,100
5. Step 5: Solve for x
   x = 10,545,236,100/67,158
6. Step 6: Final answer
   x = 157,021.29