Finding the Third Proportional to 69,030.56 and 74,619.56

Step by Step Solution

1. Step 1: Write the proportion equation
   69,030.56 : 74,619.56 = 74,619.56 : x
2. Step 2: Convert to fraction form
   69,030.56/74,619.56 = 74,619.56/x
3. Step 3: Cross multiply
   69,030.56x = 74,619.56 × 74,619.56
4. Step 4: Simplify right side
   69,030.56x = 5,568,079,107.69
5. Step 5: Solve for x
   x = 5,568,079,107.69/69,030.56
6. Step 6: Final answer
   x = 80,661.07