Finding the Third Proportional to 53,299.69 and 79,867.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,299.69 : 79,867.50 = 79,867.50 : x
2. Step 2: Convert to fraction form
   53,299.69/79,867.50 = 79,867.50/x
3. Step 3: Cross multiply
   53,299.69x = 79,867.50 × 79,867.50
4. Step 4: Simplify right side
   53,299.69x = 6,378,817,556.25
5. Step 5: Solve for x
   x = 6,378,817,556.25/53,299.69
6. Step 6: Final answer
   x = 119,678.33