Finding the Third Proportional to 72,679.50 and 155,866.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,679.50 : 155,866.50 = 155,866.50 : x
2. Step 2: Convert to fraction form
   72,679.50/155,866.50 = 155,866.50/x
3. Step 3: Cross multiply
   72,679.50x = 155,866.50 × 155,866.50
4. Step 4: Simplify right side
   72,679.50x = 24,294,365,822.25
5. Step 5: Solve for x
   x = 24,294,365,822.25/72,679.50
6. Step 6: Final answer
   x = 334,267.10