Finding the Third Proportional to 42,066 and 90,690

Step by Step Solution

1. Step 1: Write the proportion equation
   42,066 : 90,690 = 90,690 : x
2. Step 2: Convert to fraction form
   42,066/90,690 = 90,690/x
3. Step 3: Cross multiply
   42,066x = 90,690 × 90,690
4. Step 4: Simplify right side
   42,066x = 8,224,676,100
5. Step 5: Solve for x
   x = 8,224,676,100/42,066
6. Step 6: Final answer
   x = 195,518.38