Finding the Third Proportional to 42,400 and 92,090

Step by Step Solution

1. Step 1: Write the proportion equation
   42,400 : 92,090 = 92,090 : x
2. Step 2: Convert to fraction form
   42,400/92,090 = 92,090/x
3. Step 3: Cross multiply
   42,400x = 92,090 × 92,090
4. Step 4: Simplify right side
   42,400x = 8,480,568,100
5. Step 5: Solve for x
   x = 8,480,568,100/42,400
6. Step 6: Final answer
   x = 200,013.40