Finding the Third Proportional to 57,396 and 90,496

Step by Step Solution

1. Step 1: Write the proportion equation
   57,396 : 90,496 = 90,496 : x
2. Step 2: Convert to fraction form
   57,396/90,496 = 90,496/x
3. Step 3: Cross multiply
   57,396x = 90,496 × 90,496
4. Step 4: Simplify right side
   57,396x = 8,189,526,016
5. Step 5: Solve for x
   x = 8,189,526,016/57,396
6. Step 6: Final answer
   x = 142,684.61