Finding the Third Proportional to 90,120 and 193,479

Step by Step Solution

1. Step 1: Write the proportion equation
   90,120 : 193,479 = 193,479 : x
2. Step 2: Convert to fraction form
   90,120/193,479 = 193,479/x
3. Step 3: Cross multiply
   90,120x = 193,479 × 193,479
4. Step 4: Simplify right side
   90,120x = 37,434,123,441
5. Step 5: Solve for x
   x = 37,434,123,441/90,120
6. Step 6: Final answer
   x = 415,380.86