Finding the Third Proportional to 638,658 and 888,003

Step by Step Solution

1. Step 1: Write the proportion equation
   638,658 : 888,003 = 888,003 : x
2. Step 2: Convert to fraction form
   638,658/888,003 = 888,003/x
3. Step 3: Cross multiply
   638,658x = 888,003 × 888,003
4. Step 4: Simplify right side
   638,658x = 788,549,328,009
5. Step 5: Solve for x
   x = 788,549,328,009/638,658
6. Step 6: Final answer
   x = 1,234,697.33