Finding the Third Proportional to 42,008 and 90,912

Step by Step Solution

1. Step 1: Write the proportion equation
   42,008 : 90,912 = 90,912 : x
2. Step 2: Convert to fraction form
   42,008/90,912 = 90,912/x
3. Step 3: Cross multiply
   42,008x = 90,912 × 90,912
4. Step 4: Simplify right side
   42,008x = 8,264,991,744
5. Step 5: Solve for x
   x = 8,264,991,744/42,008
6. Step 6: Final answer
   x = 196,748.04