Finding the Third Proportional to 78,636 and 168,292.31

Step by Step Solution

1. Step 1: Write the proportion equation
   78,636 : 168,292.31 = 168,292.31 : x
2. Step 2: Convert to fraction form
   78,636/168,292.31 = 168,292.31/x
3. Step 3: Cross multiply
   78,636x = 168,292.31 × 168,292.31
4. Step 4: Simplify right side
   78,636x = 28,322,302,446.60
5. Step 5: Solve for x
   x = 28,322,302,446.60/78,636
6. Step 6: Final answer
   x = 360,169.67