Finding the Third Proportional to 72,162 and 156,486

Step by Step Solution

1. Step 1: Write the proportion equation
   72,162 : 156,486 = 156,486 : x
2. Step 2: Convert to fraction form
   72,162/156,486 = 156,486/x
3. Step 3: Cross multiply
   72,162x = 156,486 × 156,486
4. Step 4: Simplify right side
   72,162x = 24,487,868,196
5. Step 5: Solve for x
   x = 24,487,868,196/72,162
6. Step 6: Final answer
   x = 339,345.75