Finding the Third Proportional to 42,090 and 90,740

Step by Step Solution

1. Step 1: Write the proportion equation
   42,090 : 90,740 = 90,740 : x
2. Step 2: Convert to fraction form
   42,090/90,740 = 90,740/x
3. Step 3: Cross multiply
   42,090x = 90,740 × 90,740
4. Step 4: Simplify right side
   42,090x = 8,233,747,600
5. Step 5: Solve for x
   x = 8,233,747,600/42,090
6. Step 6: Final answer
   x = 195,622.42