Finding the Third Proportional to 661,405.50 and 1,021,936.50

Step by Step Solution

1. Step 1: Write the proportion equation
   661,405.50 : 1,021,936.50 = 1,021,936.50 : x
2. Step 2: Convert to fraction form
   661,405.50/1,021,936.50 = 1,021,936.50/x
3. Step 3: Cross multiply
   661,405.50x = 1,021,936.50 × 1,021,936.50
4. Step 4: Simplify right side
   661,405.50x = 1,044,354,210,032.25
5. Step 5: Solve for x
   x = 1,044,354,210,032.25/661,405.50
6. Step 6: Final answer
   x = 1,578,992.33