Finding the Third Proportional to 276,402 and 580,654.50

Step by Step Solution

1. Step 1: Write the proportion equation
   276,402 : 580,654.50 = 580,654.50 : x
2. Step 2: Convert to fraction form
   276,402/580,654.50 = 580,654.50/x
3. Step 3: Cross multiply
   276,402x = 580,654.50 × 580,654.50
4. Step 4: Simplify right side
   276,402x = 337,159,648,370.25
5. Step 5: Solve for x
   x = 337,159,648,370.25/276,402
6. Step 6: Final answer
   x = 1,219,816.24