Finding the Third Proportional to 287,563 and 623,050

Step by Step Solution

1. Step 1: Write the proportion equation
   287,563 : 623,050 = 623,050 : x
2. Step 2: Convert to fraction form
   287,563/623,050 = 623,050/x
3. Step 3: Cross multiply
   287,563x = 623,050 × 623,050
4. Step 4: Simplify right side
   287,563x = 388,191,302,500
5. Step 5: Solve for x
   x = 388,191,302,500/287,563
6. Step 6: Final answer
   x = 1,349,934.81