Finding the Third Proportional to 555,885 and 1,213,420.50

Step by Step Solution

1. Step 1: Write the proportion equation
   555,885 : 1,213,420.50 = 1,213,420.50 : x
2. Step 2: Convert to fraction form
   555,885/1,213,420.50 = 1,213,420.50/x
3. Step 3: Cross multiply
   555,885x = 1,213,420.50 × 1,213,420.50
4. Step 4: Simplify right side
   555,885x = 1,472,389,309,820.25
5. Step 5: Solve for x
   x = 1,472,389,309,820.25/555,885
6. Step 6: Final answer
   x = 2,648,730.06