Finding the Third Proportional to 141,915.75 and 213,466.50

Step by Step Solution

1. Step 1: Write the proportion equation
   141,915.75 : 213,466.50 = 213,466.50 : x
2. Step 2: Convert to fraction form
   141,915.75/213,466.50 = 213,466.50/x
3. Step 3: Cross multiply
   141,915.75x = 213,466.50 × 213,466.50
4. Step 4: Simplify right side
   141,915.75x = 45,567,946,622.25
5. Step 5: Solve for x
   x = 45,567,946,622.25/141,915.75
6. Step 6: Final answer
   x = 321,091.54