Finding the Third Proportional to 42,315.75 and 90,261

Step by Step Solution

1. Step 1: Write the proportion equation
   42,315.75 : 90,261 = 90,261 : x
2. Step 2: Convert to fraction form
   42,315.75/90,261 = 90,261/x
3. Step 3: Cross multiply
   42,315.75x = 90,261 × 90,261
4. Step 4: Simplify right side
   42,315.75x = 8,147,048,121
5. Step 5: Solve for x
   x = 8,147,048,121/42,315.75
6. Step 6: Final answer
   x = 192,529.92