Finding the Third Proportional to 65,118 and 133,688

Step by Step Solution

1. Step 1: Write the proportion equation
   65,118 : 133,688 = 133,688 : x
2. Step 2: Convert to fraction form
   65,118/133,688 = 133,688/x
3. Step 3: Cross multiply
   65,118x = 133,688 × 133,688
4. Step 4: Simplify right side
   65,118x = 17,872,481,344
5. Step 5: Solve for x
   x = 17,872,481,344/65,118
6. Step 6: Final answer
   x = 274,463.00