Finding the Third Proportional to 33,979.50 and 51,718.50

Step by Step Solution

1. Step 1: Write the proportion equation
   33,979.50 : 51,718.50 = 51,718.50 : x
2. Step 2: Convert to fraction form
   33,979.50/51,718.50 = 51,718.50/x
3. Step 3: Cross multiply
   33,979.50x = 51,718.50 × 51,718.50
4. Step 4: Simplify right side
   33,979.50x = 2,674,803,242.25
5. Step 5: Solve for x
   x = 2,674,803,242.25/33,979.50
6. Step 6: Final answer
   x = 78,718.15