Finding the Third Proportional to 42,410 and 90,436

Step by Step Solution

1. Step 1: Write the proportion equation
   42,410 : 90,436 = 90,436 : x
2. Step 2: Convert to fraction form
   42,410/90,436 = 90,436/x
3. Step 3: Cross multiply
   42,410x = 90,436 × 90,436
4. Step 4: Simplify right side
   42,410x = 8,178,670,096
5. Step 5: Solve for x
   x = 8,178,670,096/42,410
6. Step 6: Final answer
   x = 192,847.68