Finding the Third Proportional to 71,353.50 and 155,419.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,353.50 : 155,419.50 = 155,419.50 : x
2. Step 2: Convert to fraction form
   71,353.50/155,419.50 = 155,419.50/x
3. Step 3: Cross multiply
   71,353.50x = 155,419.50 × 155,419.50
4. Step 4: Simplify right side
   71,353.50x = 24,155,220,980.25
5. Step 5: Solve for x
   x = 24,155,220,980.25/71,353.50
6. Step 6: Final answer
   x = 338,528.89