Finding the Third Proportional to 67,088 and 90,790

Step by Step Solution

1. Step 1: Write the proportion equation
   67,088 : 90,790 = 90,790 : x
2. Step 2: Convert to fraction form
   67,088/90,790 = 90,790/x
3. Step 3: Cross multiply
   67,088x = 90,790 × 90,790
4. Step 4: Simplify right side
   67,088x = 8,242,824,100
5. Step 5: Solve for x
   x = 8,242,824,100/67,088
6. Step 6: Final answer
   x = 122,865.85