Finding the Third Proportional to 262,410 and 551,257.50

Step by Step Solution

1. Step 1: Write the proportion equation
   262,410 : 551,257.50 = 551,257.50 : x
2. Step 2: Convert to fraction form
   262,410/551,257.50 = 551,257.50/x
3. Step 3: Cross multiply
   262,410x = 551,257.50 × 551,257.50
4. Step 4: Simplify right side
   262,410x = 303,884,831,306.25
5. Step 5: Solve for x
   x = 303,884,831,306.25/262,410
6. Step 6: Final answer
   x = 1,158,053.55