Finding the Third Proportional to 717,916 and 1,111,488

Step by Step Solution

1. Step 1: Write the proportion equation
   717,916 : 1,111,488 = 1,111,488 : x
2. Step 2: Convert to fraction form
   717,916/1,111,488 = 1,111,488/x
3. Step 3: Cross multiply
   717,916x = 1,111,488 × 1,111,488
4. Step 4: Simplify right side
   717,916x = 1,235,405,574,144
5. Step 5: Solve for x
   x = 1,235,405,574,144/717,916
6. Step 6: Final answer
   x = 1,720,821.90