Finding the Third Proportional to 446,239 and 679,816.50

Step by Step Solution

1. Step 1: Write the proportion equation
   446,239 : 679,816.50 = 679,816.50 : x
2. Step 2: Convert to fraction form
   446,239/679,816.50 = 679,816.50/x
3. Step 3: Cross multiply
   446,239x = 679,816.50 × 679,816.50
4. Step 4: Simplify right side
   446,239x = 462,150,473,672.25
5. Step 5: Solve for x
   x = 462,150,473,672.25/446,239
6. Step 6: Final answer
   x = 1,035,656.84