Finding the Third Proportional to 71,920.50 and 156,964.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,920.50 : 156,964.50 = 156,964.50 : x
2. Step 2: Convert to fraction form
   71,920.50/156,964.50 = 156,964.50/x
3. Step 3: Cross multiply
   71,920.50x = 156,964.50 × 156,964.50
4. Step 4: Simplify right side
   71,920.50x = 24,637,854,260.25
5. Step 5: Solve for x
   x = 24,637,854,260.25/71,920.50
6. Step 6: Final answer
   x = 342,570.68