Finding the Third Proportional to 69,451.69 and 105,145.78

Step by Step Solution

1. Step 1: Write the proportion equation
   69,451.69 : 105,145.78 = 105,145.78 : x
2. Step 2: Convert to fraction form
   69,451.69/105,145.78 = 105,145.78/x
3. Step 3: Cross multiply
   69,451.69x = 105,145.78 × 105,145.78
4. Step 4: Simplify right side
   69,451.69x = 11,055,635,314.67
5. Step 5: Solve for x
   x = 11,055,635,314.67/69,451.69
6. Step 6: Final answer
   x = 159,184.55