Finding the Third Proportional to 72,429 and 156,917

Step by Step Solution

1. Step 1: Write the proportion equation
   72,429 : 156,917 = 156,917 : x
2. Step 2: Convert to fraction form
   72,429/156,917 = 156,917/x
3. Step 3: Cross multiply
   72,429x = 156,917 × 156,917
4. Step 4: Simplify right side
   72,429x = 24,622,944,889
5. Step 5: Solve for x
   x = 24,622,944,889/72,429
6. Step 6: Final answer
   x = 339,959.75