Finding the Third Proportional to 30,070.69 and 42,040.69

Step by Step Solution

1. Step 1: Write the proportion equation
   30,070.69 : 42,040.69 = 42,040.69 : x
2. Step 2: Convert to fraction form
   30,070.69/42,040.69 = 42,040.69/x
3. Step 3: Cross multiply
   30,070.69x = 42,040.69 × 42,040.69
4. Step 4: Simplify right side
   30,070.69x = 1,767,419,405.47
5. Step 5: Solve for x
   x = 1,767,419,405.47/30,070.69
6. Step 6: Final answer
   x = 58,775.49