Finding the Third Proportional to 530,448 and 1,085,409

Step by Step Solution

1. Step 1: Write the proportion equation
   530,448 : 1,085,409 = 1,085,409 : x
2. Step 2: Convert to fraction form
   530,448/1,085,409 = 1,085,409/x
3. Step 3: Cross multiply
   530,448x = 1,085,409 × 1,085,409
4. Step 4: Simplify right side
   530,448x = 1,178,112,697,281
5. Step 5: Solve for x
   x = 1,178,112,697,281/530,448
6. Step 6: Final answer
   x = 2,220,976.79