Finding the Third Proportional to 42,048 and 90,624

Step by Step Solution

1. Step 1: Write the proportion equation
   42,048 : 90,624 = 90,624 : x
2. Step 2: Convert to fraction form
   42,048/90,624 = 90,624/x
3. Step 3: Cross multiply
   42,048x = 90,624 × 90,624
4. Step 4: Simplify right side
   42,048x = 8,212,709,376
5. Step 5: Solve for x
   x = 8,212,709,376/42,048
6. Step 6: Final answer
   x = 195,317.48