Finding the Third Proportional to 60,978 and 133,080

Step by Step Solution

1. Step 1: Write the proportion equation
   60,978 : 133,080 = 133,080 : x
2. Step 2: Convert to fraction form
   60,978/133,080 = 133,080/x
3. Step 3: Cross multiply
   60,978x = 133,080 × 133,080
4. Step 4: Simplify right side
   60,978x = 17,710,286,400
5. Step 5: Solve for x
   x = 17,710,286,400/60,978
6. Step 6: Final answer
   x = 290,437.31