Finding the Third Proportional to 638,622 and 1,064,328

Step by Step Solution

1. Step 1: Write the proportion equation
   638,622 : 1,064,328 = 1,064,328 : x
2. Step 2: Convert to fraction form
   638,622/1,064,328 = 1,064,328/x
3. Step 3: Cross multiply
   638,622x = 1,064,328 × 1,064,328
4. Step 4: Simplify right side
   638,622x = 1,132,794,091,584
5. Step 5: Solve for x
   x = 1,132,794,091,584/638,622
6. Step 6: Final answer
   x = 1,773,810.00