Finding the Third Proportional to 69,572.81 and 105,686.72

Step by Step Solution

1. Step 1: Write the proportion equation
   69,572.81 : 105,686.72 = 105,686.72 : x
2. Step 2: Convert to fraction form
   69,572.81/105,686.72 = 105,686.72/x
3. Step 3: Cross multiply
   69,572.81x = 105,686.72 × 105,686.72
4. Step 4: Simplify right side
   69,572.81x = 11,169,682,520.14
5. Step 5: Solve for x
   x = 11,169,682,520.14/69,572.81
6. Step 6: Final answer
   x = 160,546.66