Finding the Third Proportional to 287,016.75 and 626,494.50

Step by Step Solution

1. Step 1: Write the proportion equation
   287,016.75 : 626,494.50 = 626,494.50 : x
2. Step 2: Convert to fraction form
   287,016.75/626,494.50 = 626,494.50/x
3. Step 3: Cross multiply
   287,016.75x = 626,494.50 × 626,494.50
4. Step 4: Simplify right side
   287,016.75x = 392,495,358,530.25
5. Step 5: Solve for x
   x = 392,495,358,530.25/287,016.75
6. Step 6: Final answer
   x = 1,367,499.84