Finding the Third Proportional to 638,623 and 1,064,329

Step by Step Solution

1. Step 1: Write the proportion equation
   638,623 : 1,064,329 = 1,064,329 : x
2. Step 2: Convert to fraction form
   638,623/1,064,329 = 1,064,329/x
3. Step 3: Cross multiply
   638,623x = 1,064,329 × 1,064,329
4. Step 4: Simplify right side
   638,623x = 1,132,796,220,241
5. Step 5: Solve for x
   x = 1,132,796,220,241/638,623
6. Step 6: Final answer
   x = 1,773,810.56