Finding the Third Proportional to 71,890.50 and 154,189.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,890.50 : 154,189.50 = 154,189.50 : x
2. Step 2: Convert to fraction form
   71,890.50/154,189.50 = 154,189.50/x
3. Step 3: Cross multiply
   71,890.50x = 154,189.50 × 154,189.50
4. Step 4: Simplify right side
   71,890.50x = 23,774,401,910.25
5. Step 5: Solve for x
   x = 23,774,401,910.25/71,890.50
6. Step 6: Final answer
   x = 330,702.97