Finding the Third Proportional to 72,142 and 158,122

Step by Step Solution

1. Step 1: Write the proportion equation
   72,142 : 158,122 = 158,122 : x
2. Step 2: Convert to fraction form
   72,142/158,122 = 158,122/x
3. Step 3: Cross multiply
   72,142x = 158,122 × 158,122
4. Step 4: Simplify right side
   72,142x = 25,002,566,884
5. Step 5: Solve for x
   x = 25,002,566,884/72,142
6. Step 6: Final answer
   x = 346,574.35