Finding the Third Proportional to 287,418 and 604,602

Step by Step Solution

1. Step 1: Write the proportion equation
   287,418 : 604,602 = 604,602 : x
2. Step 2: Convert to fraction form
   287,418/604,602 = 604,602/x
3. Step 3: Cross multiply
   287,418x = 604,602 × 604,602
4. Step 4: Simplify right side
   287,418x = 365,543,578,404
5. Step 5: Solve for x
   x = 365,543,578,404/287,418
6. Step 6: Final answer
   x = 1,271,818.67