Finding the Third Proportional to 72,339 and 156,979

Step by Step Solution

1. Step 1: Write the proportion equation
   72,339 : 156,979 = 156,979 : x
2. Step 2: Convert to fraction form
   72,339/156,979 = 156,979/x
3. Step 3: Cross multiply
   72,339x = 156,979 × 156,979
4. Step 4: Simplify right side
   72,339x = 24,642,406,441
5. Step 5: Solve for x
   x = 24,642,406,441/72,339
6. Step 6: Final answer
   x = 340,651.74