Finding the Third Proportional to 78,610 and 169,669.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,610 : 169,669.50 = 169,669.50 : x
2. Step 2: Convert to fraction form
   78,610/169,669.50 = 169,669.50/x
3. Step 3: Cross multiply
   78,610x = 169,669.50 × 169,669.50
4. Step 4: Simplify right side
   78,610x = 28,787,739,230.25
5. Step 5: Solve for x
   x = 28,787,739,230.25/78,610
6. Step 6: Final answer
   x = 366,209.63