Finding the Third Proportional to 288,738 and 609,066

Step by Step Solution

1. Step 1: Write the proportion equation
   288,738 : 609,066 = 609,066 : x
2. Step 2: Convert to fraction form
   288,738/609,066 = 609,066/x
3. Step 3: Cross multiply
   288,738x = 609,066 × 609,066
4. Step 4: Simplify right side
   288,738x = 370,961,392,356
5. Step 5: Solve for x
   x = 370,961,392,356/288,738
6. Step 6: Final answer
   x = 1,284,768.17