Finding the Third Proportional to 21,615 and 47,017.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,615 : 47,017.50 = 47,017.50 : x
2. Step 2: Convert to fraction form
   21,615/47,017.50 = 47,017.50/x
3. Step 3: Cross multiply
   21,615x = 47,017.50 × 47,017.50
4. Step 4: Simplify right side
   21,615x = 2,210,645,306.25
5. Step 5: Solve for x
   x = 2,210,645,306.25/21,615
6. Step 6: Final answer
   x = 102,273.67