Finding the Third Proportional to 21,989.25 and 34,980.75

Step by Step Solution

1. Step 1: Write the proportion equation
   21,989.25 : 34,980.75 = 34,980.75 : x
2. Step 2: Convert to fraction form
   21,989.25/34,980.75 = 34,980.75/x
3. Step 3: Cross multiply
   21,989.25x = 34,980.75 × 34,980.75
4. Step 4: Simplify right side
   21,989.25x = 1,223,652,870.56
5. Step 5: Solve for x
   x = 1,223,652,870.56/21,989.25
6. Step 6: Final answer
   x = 55,647.78