Finding the Third Proportional to 19,620.75 and 42,400.38

Step by Step Solution

1. Step 1: Write the proportion equation
   19,620.75 : 42,400.38 = 42,400.38 : x
2. Step 2: Convert to fraction form
   19,620.75/42,400.38 = 42,400.38/x
3. Step 3: Cross multiply
   19,620.75x = 42,400.38 × 42,400.38
4. Step 4: Simplify right side
   19,620.75x = 1,797,791,800.14
5. Step 5: Solve for x
   x = 1,797,791,800.14/19,620.75
6. Step 6: Final answer
   x = 91,627.07