Finding the Third Proportional to 434,979 and 665,467.50

Step by Step Solution

1. Step 1: Write the proportion equation
   434,979 : 665,467.50 = 665,467.50 : x
2. Step 2: Convert to fraction form
   434,979/665,467.50 = 665,467.50/x
3. Step 3: Cross multiply
   434,979x = 665,467.50 × 665,467.50
4. Step 4: Simplify right side
   434,979x = 442,846,993,556.25
5. Step 5: Solve for x
   x = 442,846,993,556.25/434,979
6. Step 6: Final answer
   x = 1,018,088.21