Finding the Third Proportional to 72,730 and 156,908

Step by Step Solution

1. Step 1: Write the proportion equation
   72,730 : 156,908 = 156,908 : x
2. Step 2: Convert to fraction form
   72,730/156,908 = 156,908/x
3. Step 3: Cross multiply
   72,730x = 156,908 × 156,908
4. Step 4: Simplify right side
   72,730x = 24,620,120,464
5. Step 5: Solve for x
   x = 24,620,120,464/72,730
6. Step 6: Final answer
   x = 338,513.96