Finding the Third Proportional to 552,663 and 810,864

Step by Step Solution

1. Step 1: Write the proportion equation
   552,663 : 810,864 = 810,864 : x
2. Step 2: Convert to fraction form
   552,663/810,864 = 810,864/x
3. Step 3: Cross multiply
   552,663x = 810,864 × 810,864
4. Step 4: Simplify right side
   552,663x = 657,500,426,496
5. Step 5: Solve for x
   x = 657,500,426,496/552,663
6. Step 6: Final answer
   x = 1,189,695.03