Finding the Third Proportional to 20,135.25 and 42,862.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,135.25 : 42,862.50 = 42,862.50 : x
2. Step 2: Convert to fraction form
   20,135.25/42,862.50 = 42,862.50/x
3. Step 3: Cross multiply
   20,135.25x = 42,862.50 × 42,862.50
4. Step 4: Simplify right side
   20,135.25x = 1,837,193,906.25
5. Step 5: Solve for x
   x = 1,837,193,906.25/20,135.25
6. Step 6: Final answer
   x = 91,242.67