Finding the Third Proportional to 30,642.75 and 42,197.25

Step by Step Solution

1. Step 1: Write the proportion equation
   30,642.75 : 42,197.25 = 42,197.25 : x
2. Step 2: Convert to fraction form
   30,642.75/42,197.25 = 42,197.25/x
3. Step 3: Cross multiply
   30,642.75x = 42,197.25 × 42,197.25
4. Step 4: Simplify right side
   30,642.75x = 1,780,607,907.56
5. Step 5: Solve for x
   x = 1,780,607,907.56/30,642.75
6. Step 6: Final answer
   x = 58,108.62