Finding the Third Proportional to 42,148 and 90,308

Step by Step Solution

1. Step 1: Write the proportion equation
   42,148 : 90,308 = 90,308 : x
2. Step 2: Convert to fraction form
   42,148/90,308 = 90,308/x
3. Step 3: Cross multiply
   42,148x = 90,308 × 90,308
4. Step 4: Simplify right side
   42,148x = 8,155,534,864
5. Step 5: Solve for x
   x = 8,155,534,864/42,148
6. Step 6: Final answer
   x = 193,497.55