Finding the Third Proportional to 42,007 and 90,910

Step by Step Solution

1. Step 1: Write the proportion equation
   42,007 : 90,910 = 90,910 : x
2. Step 2: Convert to fraction form
   42,007/90,910 = 90,910/x
3. Step 3: Cross multiply
   42,007x = 90,910 × 90,910
4. Step 4: Simplify right side
   42,007x = 8,264,628,100
5. Step 5: Solve for x
   x = 8,264,628,100/42,007
6. Step 6: Final answer
   x = 196,744.07