Finding the Third Proportional to 21,012.50 and 43,972.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,012.50 : 43,972.50 = 43,972.50 : x
2. Step 2: Convert to fraction form
   21,012.50/43,972.50 = 43,972.50/x
3. Step 3: Cross multiply
   21,012.50x = 43,972.50 × 43,972.50
4. Step 4: Simplify right side
   21,012.50x = 1,933,580,756.25
5. Step 5: Solve for x
   x = 1,933,580,756.25/21,012.50
6. Step 6: Final answer
   x = 92,020.50