Finding the Third Proportional to 21,708 and 45,142.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,708 : 45,142.50 = 45,142.50 : x
2. Step 2: Convert to fraction form
   21,708/45,142.50 = 45,142.50/x
3. Step 3: Cross multiply
   21,708x = 45,142.50 × 45,142.50
4. Step 4: Simplify right side
   21,708x = 2,037,845,306.25
5. Step 5: Solve for x
   x = 2,037,845,306.25/21,708
6. Step 6: Final answer
   x = 93,875.31