Finding the Third Proportional to 190,066.50 and 412,992

Step by Step Solution

1. Step 1: Write the proportion equation
   190,066.50 : 412,992 = 412,992 : x
2. Step 2: Convert to fraction form
   190,066.50/412,992 = 412,992/x
3. Step 3: Cross multiply
   190,066.50x = 412,992 × 412,992
4. Step 4: Simplify right side
   190,066.50x = 170,562,392,064
5. Step 5: Solve for x
   x = 170,562,392,064/190,066.50
6. Step 6: Final answer
   x = 897,382.72