Finding the Third Proportional to 664,346 and 1,031,520

Step by Step Solution

1. Step 1: Write the proportion equation
   664,346 : 1,031,520 = 1,031,520 : x
2. Step 2: Convert to fraction form
   664,346/1,031,520 = 1,031,520/x
3. Step 3: Cross multiply
   664,346x = 1,031,520 × 1,031,520
4. Step 4: Simplify right side
   664,346x = 1,064,033,510,400
5. Step 5: Solve for x
   x = 1,064,033,510,400/664,346
6. Step 6: Final answer
   x = 1,601,625.52