Finding the Third Proportional to 561,118.50 and 870,624

Step by Step Solution

1. Step 1: Write the proportion equation
   561,118.50 : 870,624 = 870,624 : x
2. Step 2: Convert to fraction form
   561,118.50/870,624 = 870,624/x
3. Step 3: Cross multiply
   561,118.50x = 870,624 × 870,624
4. Step 4: Simplify right side
   561,118.50x = 757,986,149,376
5. Step 5: Solve for x
   x = 757,986,149,376/561,118.50
6. Step 6: Final answer
   x = 1,350,848.62