Finding the Third Proportional to 63,979.50 and 137,679

Step by Step Solution

1. Step 1: Write the proportion equation
   63,979.50 : 137,679 = 137,679 : x
2. Step 2: Convert to fraction form
   63,979.50/137,679 = 137,679/x
3. Step 3: Cross multiply
   63,979.50x = 137,679 × 137,679
4. Step 4: Simplify right side
   63,979.50x = 18,955,507,041
5. Step 5: Solve for x
   x = 18,955,507,041/63,979.50
6. Step 6: Final answer
   x = 296,274.70