Finding the Third Proportional to 52,708.50 and 78,979.50

Step by Step Solution

1. Step 1: Write the proportion equation
   52,708.50 : 78,979.50 = 78,979.50 : x
2. Step 2: Convert to fraction form
   52,708.50/78,979.50 = 78,979.50/x
3. Step 3: Cross multiply
   52,708.50x = 78,979.50 × 78,979.50
4. Step 4: Simplify right side
   52,708.50x = 6,237,761,420.25
5. Step 5: Solve for x
   x = 6,237,761,420.25/52,708.50
6. Step 6: Final answer
   x = 118,344.51