Finding the Third Proportional to 67,136 and 90,858

Step by Step Solution

1. Step 1: Write the proportion equation
   67,136 : 90,858 = 90,858 : x
2. Step 2: Convert to fraction form
   67,136/90,858 = 90,858/x
3. Step 3: Cross multiply
   67,136x = 90,858 × 90,858
4. Step 4: Simplify right side
   67,136x = 8,255,176,164
5. Step 5: Solve for x
   x = 8,255,176,164/67,136
6. Step 6: Final answer
   x = 122,961.99