Finding the Third Proportional to 89,446 and 139,056

Step by Step Solution

1. Step 1: Write the proportion equation
   89,446 : 139,056 = 139,056 : x
2. Step 2: Convert to fraction form
   89,446/139,056 = 139,056/x
3. Step 3: Cross multiply
   89,446x = 139,056 × 139,056
4. Step 4: Simplify right side
   89,446x = 19,336,571,136
5. Step 5: Solve for x
   x = 19,336,571,136/89,446
6. Step 6: Final answer
   x = 216,181.51