Finding the Third Proportional to 65,312 and 133,390

Step by Step Solution

1. Step 1: Write the proportion equation
   65,312 : 133,390 = 133,390 : x
2. Step 2: Convert to fraction form
   65,312/133,390 = 133,390/x
3. Step 3: Cross multiply
   65,312x = 133,390 × 133,390
4. Step 4: Simplify right side
   65,312x = 17,792,892,100
5. Step 5: Solve for x
   x = 17,792,892,100/65,312
6. Step 6: Final answer
   x = 272,429.14