Finding the Third Proportional to 69,300.56 and 73,674.56

Step by Step Solution

1. Step 1: Write the proportion equation
   69,300.56 : 73,674.56 = 73,674.56 : x
2. Step 2: Convert to fraction form
   69,300.56/73,674.56 = 73,674.56/x
3. Step 3: Cross multiply
   69,300.56x = 73,674.56 × 73,674.56
4. Step 4: Simplify right side
   69,300.56x = 5,427,941,159.57
5. Step 5: Solve for x
   x = 5,427,941,159.57/69,300.56
6. Step 6: Final answer
   x = 78,324.63