Finding the Third Proportional to 287,460 and 604,710

Step by Step Solution

1. Step 1: Write the proportion equation
   287,460 : 604,710 = 604,710 : x
2. Step 2: Convert to fraction form
   287,460/604,710 = 604,710/x
3. Step 3: Cross multiply
   287,460x = 604,710 × 604,710
4. Step 4: Simplify right side
   287,460x = 365,674,184,100
5. Step 5: Solve for x
   x = 365,674,184,100/287,460
6. Step 6: Final answer
   x = 1,272,087.19