Finding the Third Proportional to 112,290 and 168,890

Step by Step Solution

1. Step 1: Write the proportion equation
   112,290 : 168,890 = 168,890 : x
2. Step 2: Convert to fraction form
   112,290/168,890 = 168,890/x
3. Step 3: Cross multiply
   112,290x = 168,890 × 168,890
4. Step 4: Simplify right side
   112,290x = 28,523,832,100
5. Step 5: Solve for x
   x = 28,523,832,100/112,290
6. Step 6: Final answer
   x = 254,019.34