Finding the Third Proportional to 287,590.50 and 612,063

Step by Step Solution

1. Step 1: Write the proportion equation
   287,590.50 : 612,063 = 612,063 : x
2. Step 2: Convert to fraction form
   287,590.50/612,063 = 612,063/x
3. Step 3: Cross multiply
   287,590.50x = 612,063 × 612,063
4. Step 4: Simplify right side
   287,590.50x = 374,621,115,969
5. Step 5: Solve for x
   x = 374,621,115,969/287,590.50
6. Step 6: Final answer
   x = 1,302,619.93