Finding the Third Proportional to 498,557 and 1,087,320

Step by Step Solution

1. Step 1: Write the proportion equation
   498,557 : 1,087,320 = 1,087,320 : x
2. Step 2: Convert to fraction form
   498,557/1,087,320 = 1,087,320/x
3. Step 3: Cross multiply
   498,557x = 1,087,320 × 1,087,320
4. Step 4: Simplify right side
   498,557x = 1,182,264,782,400
5. Step 5: Solve for x
   x = 1,182,264,782,400/498,557
6. Step 6: Final answer
   x = 2,371,373.35