Finding the Third Proportional to 630,978 and 917,667

Step by Step Solution

1. Step 1: Write the proportion equation
   630,978 : 917,667 = 917,667 : x
2. Step 2: Convert to fraction form
   630,978/917,667 = 917,667/x
3. Step 3: Cross multiply
   630,978x = 917,667 × 917,667
4. Step 4: Simplify right side
   630,978x = 842,112,722,889
5. Step 5: Solve for x
   x = 842,112,722,889/630,978
6. Step 6: Final answer
   x = 1,334,615.03