Finding the Third Proportional to 42,111 and 90,903

Step by Step Solution

1. Step 1: Write the proportion equation
   42,111 : 90,903 = 90,903 : x
2. Step 2: Convert to fraction form
   42,111/90,903 = 90,903/x
3. Step 3: Cross multiply
   42,111x = 90,903 × 90,903
4. Step 4: Simplify right side
   42,111x = 8,263,355,409
5. Step 5: Solve for x
   x = 8,263,355,409/42,111
6. Step 6: Final answer
   x = 196,227.95