Finding the Third Proportional to 557,526 and 1,221,810

Step by Step Solution

1. Step 1: Write the proportion equation
   557,526 : 1,221,810 = 1,221,810 : x
2. Step 2: Convert to fraction form
   557,526/1,221,810 = 1,221,810/x
3. Step 3: Cross multiply
   557,526x = 1,221,810 × 1,221,810
4. Step 4: Simplify right side
   557,526x = 1,492,819,676,100
5. Step 5: Solve for x
   x = 1,492,819,676,100/557,526
6. Step 6: Final answer
   x = 2,677,578.58