Finding the Third Proportional to 72,997.50 and 155,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,997.50 : 155,404.50 = 155,404.50 : x
2. Step 2: Convert to fraction form
   72,997.50/155,404.50 = 155,404.50/x
3. Step 3: Cross multiply
   72,997.50x = 155,404.50 × 155,404.50
4. Step 4: Simplify right side
   72,997.50x = 24,150,558,620.25
5. Step 5: Solve for x
   x = 24,150,558,620.25/72,997.50
6. Step 6: Final answer
   x = 330,840.90