Finding the Third Proportional to 78,564 and 169,678.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,564 : 169,678.50 = 169,678.50 : x
2. Step 2: Convert to fraction form
   78,564/169,678.50 = 169,678.50/x
3. Step 3: Cross multiply
   78,564x = 169,678.50 × 169,678.50
4. Step 4: Simplify right side
   78,564x = 28,790,793,362.25
5. Step 5: Solve for x
   x = 28,790,793,362.25/78,564
6. Step 6: Final answer
   x = 366,462.93