Finding the Third Proportional to 71,299.50 and 154,915.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,299.50 : 154,915.50 = 154,915.50 : x
2. Step 2: Convert to fraction form
   71,299.50/154,915.50 = 154,915.50/x
3. Step 3: Cross multiply
   71,299.50x = 154,915.50 × 154,915.50
4. Step 4: Simplify right side
   71,299.50x = 23,998,812,140.25
5. Step 5: Solve for x
   x = 23,998,812,140.25/71,299.50
6. Step 6: Final answer
   x = 336,591.59