Finding the Third Proportional to 78,488 and 168,280

Step by Step Solution

1. Step 1: Write the proportion equation
   78,488 : 168,280 = 168,280 : x
2. Step 2: Convert to fraction form
   78,488/168,280 = 168,280/x
3. Step 3: Cross multiply
   78,488x = 168,280 × 168,280
4. Step 4: Simplify right side
   78,488x = 28,318,158,400
5. Step 5: Solve for x
   x = 28,318,158,400/78,488
6. Step 6: Final answer
   x = 360,796.02