Finding the Third Proportional to 661,942 and 1,022,842.50

Step by Step Solution

1. Step 1: Write the proportion equation
   661,942 : 1,022,842.50 = 1,022,842.50 : x
2. Step 2: Convert to fraction form
   661,942/1,022,842.50 = 1,022,842.50/x
3. Step 3: Cross multiply
   661,942x = 1,022,842.50 × 1,022,842.50
4. Step 4: Simplify right side
   661,942x = 1,046,206,779,806.25
5. Step 5: Solve for x
   x = 1,046,206,779,806.25/661,942
6. Step 6: Final answer
   x = 1,580,511.25