Finding the Third Proportional to 72,880 and 156,940

Step by Step Solution

1. Step 1: Write the proportion equation
   72,880 : 156,940 = 156,940 : x
2. Step 2: Convert to fraction form
   72,880/156,940 = 156,940/x
3. Step 3: Cross multiply
   72,880x = 156,940 × 156,940
4. Step 4: Simplify right side
   72,880x = 24,630,163,600
5. Step 5: Solve for x
   x = 24,630,163,600/72,880
6. Step 6: Final answer
   x = 337,955.04