Finding the Third Proportional to 440,067 and 661,072.50

Step by Step Solution

1. Step 1: Write the proportion equation
   440,067 : 661,072.50 = 661,072.50 : x
2. Step 2: Convert to fraction form
   440,067/661,072.50 = 661,072.50/x
3. Step 3: Cross multiply
   440,067x = 661,072.50 × 661,072.50
4. Step 4: Simplify right side
   440,067x = 437,016,850,256.25
5. Step 5: Solve for x
   x = 437,016,850,256.25/440,067
6. Step 6: Final answer
   x = 993,068.90