Finding the Third Proportional to 287,010 and 446,917.50

Step by Step Solution

1. Step 1: Write the proportion equation
   287,010 : 446,917.50 = 446,917.50 : x
2. Step 2: Convert to fraction form
   287,010/446,917.50 = 446,917.50/x
3. Step 3: Cross multiply
   287,010x = 446,917.50 × 446,917.50
4. Step 4: Simplify right side
   287,010x = 199,735,251,806.25
5. Step 5: Solve for x
   x = 199,735,251,806.25/287,010
6. Step 6: Final answer
   x = 695,917.40