Finding the Third Proportional to 65,488.50 and 153,940.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,488.50 : 153,940.50 = 153,940.50 : x
2. Step 2: Convert to fraction form
   65,488.50/153,940.50 = 153,940.50/x
3. Step 3: Cross multiply
   65,488.50x = 153,940.50 × 153,940.50
4. Step 4: Simplify right side
   65,488.50x = 23,697,677,540.25
5. Step 5: Solve for x
   x = 23,697,677,540.25/65,488.50
6. Step 6: Final answer
   x = 361,860.14