Finding the Third Proportional to 412,818 and 909,439.50

Step by Step Solution

1. Step 1: Write the proportion equation
   412,818 : 909,439.50 = 909,439.50 : x
2. Step 2: Convert to fraction form
   412,818/909,439.50 = 909,439.50/x
3. Step 3: Cross multiply
   412,818x = 909,439.50 × 909,439.50
4. Step 4: Simplify right side
   412,818x = 827,080,204,160.25
5. Step 5: Solve for x
   x = 827,080,204,160.25/412,818
6. Step 6: Final answer
   x = 2,003,498.40