Finding the Third Proportional to 72,318 and 156,938

Step by Step Solution

1. Step 1: Write the proportion equation
   72,318 : 156,938 = 156,938 : x
2. Step 2: Convert to fraction form
   72,318/156,938 = 156,938/x
3. Step 3: Cross multiply
   72,318x = 156,938 × 156,938
4. Step 4: Simplify right side
   72,318x = 24,629,535,844
5. Step 5: Solve for x
   x = 24,629,535,844/72,318
6. Step 6: Final answer
   x = 340,572.69