Finding the Third Proportional to 51,361 and 72,115.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,361 : 72,115.50 = 72,115.50 : x
2. Step 2: Convert to fraction form
   51,361/72,115.50 = 72,115.50/x
3. Step 3: Cross multiply
   51,361x = 72,115.50 × 72,115.50
4. Step 4: Simplify right side
   51,361x = 5,200,645,340.25
5. Step 5: Solve for x
   x = 5,200,645,340.25/51,361
6. Step 6: Final answer
   x = 101,256.70