Finding the Third Proportional to 71,620 and 156,078

Step by Step Solution

1. Step 1: Write the proportion equation
   71,620 : 156,078 = 156,078 : x
2. Step 2: Convert to fraction form
   71,620/156,078 = 156,078/x
3. Step 3: Cross multiply
   71,620x = 156,078 × 156,078
4. Step 4: Simplify right side
   71,620x = 24,360,342,084
5. Step 5: Solve for x
   x = 24,360,342,084/71,620
6. Step 6: Final answer
   x = 340,133.23