Finding the Third Proportional to 78,609 and 169,667.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,609 : 169,667.25 = 169,667.25 : x
2. Step 2: Convert to fraction form
   78,609/169,667.25 = 169,667.25/x
3. Step 3: Cross multiply
   78,609x = 169,667.25 × 169,667.25
4. Step 4: Simplify right side
   78,609x = 28,786,975,722.56
5. Step 5: Solve for x
   x = 28,786,975,722.56/78,609
6. Step 6: Final answer
   x = 366,204.58