Finding the Third Proportional to 638,776 and 1,363,250

Step by Step Solution

1. Step 1: Write the proportion equation
   638,776 : 1,363,250 = 1,363,250 : x
2. Step 2: Convert to fraction form
   638,776/1,363,250 = 1,363,250/x
3. Step 3: Cross multiply
   638,776x = 1,363,250 × 1,363,250
4. Step 4: Simplify right side
   638,776x = 1,858,450,562,500
5. Step 5: Solve for x
   x = 1,858,450,562,500/638,776
6. Step 6: Final answer
   x = 2,909,393.22