Finding the Third Proportional to 713,908 and 1,105,420

Step by Step Solution

1. Step 1: Write the proportion equation
   713,908 : 1,105,420 = 1,105,420 : x
2. Step 2: Convert to fraction form
   713,908/1,105,420 = 1,105,420/x
3. Step 3: Cross multiply
   713,908x = 1,105,420 × 1,105,420
4. Step 4: Simplify right side
   713,908x = 1,221,953,376,400
5. Step 5: Solve for x
   x = 1,221,953,376,400/713,908
6. Step 6: Final answer
   x = 1,711,639.84