Finding the Third Proportional to 42,091 and 70,143

Step by Step Solution

1. Step 1: Write the proportion equation
   42,091 : 70,143 = 70,143 : x
2. Step 2: Convert to fraction form
   42,091/70,143 = 70,143/x
3. Step 3: Cross multiply
   42,091x = 70,143 × 70,143
4. Step 4: Simplify right side
   42,091x = 4,920,040,449
5. Step 5: Solve for x
   x = 4,920,040,449/42,091
6. Step 6: Final answer
   x = 116,890.56