Finding the Third Proportional to 638,624 and 1,064,330

Step by Step Solution

1. Step 1: Write the proportion equation
   638,624 : 1,064,330 = 1,064,330 : x
2. Step 2: Convert to fraction form
   638,624/1,064,330 = 1,064,330/x
3. Step 3: Cross multiply
   638,624x = 1,064,330 × 1,064,330
4. Step 4: Simplify right side
   638,624x = 1,132,798,348,900
5. Step 5: Solve for x
   x = 1,132,798,348,900/638,624
6. Step 6: Final answer
   x = 1,773,811.11