Finding the Third Proportional to 19,620.50 and 42,500.75

Step by Step Solution

1. Step 1: Write the proportion equation
   19,620.50 : 42,500.75 = 42,500.75 : x
2. Step 2: Convert to fraction form
   19,620.50/42,500.75 = 42,500.75/x
3. Step 3: Cross multiply
   19,620.50x = 42,500.75 × 42,500.75
4. Step 4: Simplify right side
   19,620.50x = 1,806,313,750.56
5. Step 5: Solve for x
   x = 1,806,313,750.56/19,620.50
6. Step 6: Final answer
   x = 92,062.57