Finding the Third Proportional to 553,684 and 1,207,423

Step by Step Solution

1. Step 1: Write the proportion equation
   553,684 : 1,207,423 = 1,207,423 : x
2. Step 2: Convert to fraction form
   553,684/1,207,423 = 1,207,423/x
3. Step 3: Cross multiply
   553,684x = 1,207,423 × 1,207,423
4. Step 4: Simplify right side
   553,684x = 1,457,870,300,929
5. Step 5: Solve for x
   x = 1,457,870,300,929/553,684
6. Step 6: Final answer
   x = 2,633,036.72