Finding the Third Proportional to 196,028 and 288,298

Step by Step Solution

1. Step 1: Write the proportion equation
   196,028 : 288,298 = 288,298 : x
2. Step 2: Convert to fraction form
   196,028/288,298 = 288,298/x
3. Step 3: Cross multiply
   196,028x = 288,298 × 288,298
4. Step 4: Simplify right side
   196,028x = 83,115,736,804
5. Step 5: Solve for x
   x = 83,115,736,804/196,028
6. Step 6: Final answer
   x = 423,999.31