Finding the Third Proportional to 67,072 and 156,640

Step by Step Solution

1. Step 1: Write the proportion equation
   67,072 : 156,640 = 156,640 : x
2. Step 2: Convert to fraction form
   67,072/156,640 = 156,640/x
3. Step 3: Cross multiply
   67,072x = 156,640 × 156,640
4. Step 4: Simplify right side
   67,072x = 24,536,089,600
5. Step 5: Solve for x
   x = 24,536,089,600/67,072
6. Step 6: Final answer
   x = 365,817.18