Finding the Third Proportional to 42,109 and 90,053

Step by Step Solution

1. Step 1: Write the proportion equation
   42,109 : 90,053 = 90,053 : x
2. Step 2: Convert to fraction form
   42,109/90,053 = 90,053/x
3. Step 3: Cross multiply
   42,109x = 90,053 × 90,053
4. Step 4: Simplify right side
   42,109x = 8,109,542,809
5. Step 5: Solve for x
   x = 8,109,542,809/42,109
6. Step 6: Final answer
   x = 192,584.55