Finding the Third Proportional to 30,211.50 and 62,365.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,211.50 : 62,365.50 = 62,365.50 : x
2. Step 2: Convert to fraction form
   30,211.50/62,365.50 = 62,365.50/x
3. Step 3: Cross multiply
   30,211.50x = 62,365.50 × 62,365.50
4. Step 4: Simplify right side
   30,211.50x = 3,889,455,590.25
5. Step 5: Solve for x
   x = 3,889,455,590.25/30,211.50
6. Step 6: Final answer
   x = 128,740.90