Finding the Third Proportional to 112,458 and 169,428

Step by Step Solution

1. Step 1: Write the proportion equation
   112,458 : 169,428 = 169,428 : x
2. Step 2: Convert to fraction form
   112,458/169,428 = 169,428/x
3. Step 3: Cross multiply
   112,458x = 169,428 × 169,428
4. Step 4: Simplify right side
   112,458x = 28,705,847,184
5. Step 5: Solve for x
   x = 28,705,847,184/112,458
6. Step 6: Final answer
   x = 255,258.38