Finding the Third Proportional to 573,144 and 861,156

Step by Step Solution

1. Step 1: Write the proportion equation
   573,144 : 861,156 = 861,156 : x
2. Step 2: Convert to fraction form
   573,144/861,156 = 861,156/x
3. Step 3: Cross multiply
   573,144x = 861,156 × 861,156
4. Step 4: Simplify right side
   573,144x = 741,589,656,336
5. Step 5: Solve for x
   x = 741,589,656,336/573,144
6. Step 6: Final answer
   x = 1,293,897.62