Finding the Third Proportional to 561,112.88 and 870,616.69

Step by Step Solution

1. Step 1: Write the proportion equation
   561,112.88 : 870,616.69 = 870,616.69 : x
2. Step 2: Convert to fraction form
   561,112.88/870,616.69 = 870,616.69/x
3. Step 3: Cross multiply
   561,112.88x = 870,616.69 × 870,616.69
4. Step 4: Simplify right side
   561,112.88x = 757,973,416,553.47
5. Step 5: Solve for x
   x = 757,973,416,553.47/561,112.88
6. Step 6: Final answer
   x = 1,350,839.47