Finding the Third Proportional to 112,290 and 168,435.75

Step by Step Solution

1. Step 1: Write the proportion equation
   112,290 : 168,435.75 = 168,435.75 : x
2. Step 2: Convert to fraction form
   112,290/168,435.75 = 168,435.75/x
3. Step 3: Cross multiply
   112,290x = 168,435.75 × 168,435.75
4. Step 4: Simplify right side
   112,290x = 28,370,601,878.06
5. Step 5: Solve for x
   x = 28,370,601,878.06/112,290
6. Step 6: Final answer
   x = 252,654.75