Finding the Third Proportional to 403,642 and 912,144

Step by Step Solution

1. Step 1: Write the proportion equation
   403,642 : 912,144 = 912,144 : x
2. Step 2: Convert to fraction form
   403,642/912,144 = 912,144/x
3. Step 3: Cross multiply
   403,642x = 912,144 × 912,144
4. Step 4: Simplify right side
   403,642x = 832,006,676,736
5. Step 5: Solve for x
   x = 832,006,676,736/403,642
6. Step 6: Final answer
   x = 2,061,249.02