Finding the Third Proportional to 72,438 and 156,934

Step by Step Solution

1. Step 1: Write the proportion equation
   72,438 : 156,934 = 156,934 : x
2. Step 2: Convert to fraction form
   72,438/156,934 = 156,934/x
3. Step 3: Cross multiply
   72,438x = 156,934 × 156,934
4. Step 4: Simplify right side
   72,438x = 24,628,280,356
5. Step 5: Solve for x
   x = 24,628,280,356/72,438
6. Step 6: Final answer
   x = 339,991.17