Finding the Third Proportional to 21,708 and 47,587.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,708 : 47,587.50 = 47,587.50 : x
2. Step 2: Convert to fraction form
   21,708/47,587.50 = 47,587.50/x
3. Step 3: Cross multiply
   21,708x = 47,587.50 × 47,587.50
4. Step 4: Simplify right side
   21,708x = 2,264,570,156.25
5. Step 5: Solve for x
   x = 2,264,570,156.25/21,708
6. Step 6: Final answer
   x = 104,319.61