Finding the Third Proportional to 20,985.75 and 45,859.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,985.75 : 45,859.50 = 45,859.50 : x
2. Step 2: Convert to fraction form
   20,985.75/45,859.50 = 45,859.50/x
3. Step 3: Cross multiply
   20,985.75x = 45,859.50 × 45,859.50
4. Step 4: Simplify right side
   20,985.75x = 2,103,093,740.25
5. Step 5: Solve for x
   x = 2,103,093,740.25/20,985.75
6. Step 6: Final answer
   x = 100,215.32