Finding the Third Proportional to 64,180.50 and 154,615.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,180.50 : 154,615.50 = 154,615.50 : x
2. Step 2: Convert to fraction form
   64,180.50/154,615.50 = 154,615.50/x
3. Step 3: Cross multiply
   64,180.50x = 154,615.50 × 154,615.50
4. Step 4: Simplify right side
   64,180.50x = 23,905,952,840.25
5. Step 5: Solve for x
   x = 23,905,952,840.25/64,180.50
6. Step 6: Final answer
   x = 372,480.00