Finding the Third Proportional to 78,426 and 169,810

Step by Step Solution

1. Step 1: Write the proportion equation
   78,426 : 169,810 = 169,810 : x
2. Step 2: Convert to fraction form
   78,426/169,810 = 169,810/x
3. Step 3: Cross multiply
   78,426x = 169,810 × 169,810
4. Step 4: Simplify right side
   78,426x = 28,835,436,100
5. Step 5: Solve for x
   x = 28,835,436,100/78,426
6. Step 6: Final answer
   x = 367,677.00