Finding the Third Proportional to 561,124 and 870,634

Step by Step Solution

1. Step 1: Write the proportion equation
   561,124 : 870,634 = 870,634 : x
2. Step 2: Convert to fraction form
   561,124/870,634 = 870,634/x
3. Step 3: Cross multiply
   561,124x = 870,634 × 870,634
4. Step 4: Simplify right side
   561,124x = 758,003,561,956
5. Step 5: Solve for x
   x = 758,003,561,956/561,124
6. Step 6: Final answer
   x = 1,350,866.41