Finding the Third Proportional to 78,645 and 169,746

Step by Step Solution

1. Step 1: Write the proportion equation
   78,645 : 169,746 = 169,746 : x
2. Step 2: Convert to fraction form
   78,645/169,746 = 169,746/x
3. Step 3: Cross multiply
   78,645x = 169,746 × 169,746
4. Step 4: Simplify right side
   78,645x = 28,813,704,516
5. Step 5: Solve for x
   x = 28,813,704,516/78,645
6. Step 6: Final answer
   x = 366,376.81