Finding the Third Proportional to 15,780.94 and 34,021.69

Step by Step Solution

1. Step 1: Write the proportion equation
   15,780.94 : 34,021.69 = 34,021.69 : x
2. Step 2: Convert to fraction form
   15,780.94/34,021.69 = 34,021.69/x
3. Step 3: Cross multiply
   15,780.94x = 34,021.69 × 34,021.69
4. Step 4: Simplify right side
   15,780.94x = 1,157,475,220.35
5. Step 5: Solve for x
   x = 1,157,475,220.35/15,780.94
6. Step 6: Final answer
   x = 73,346.42