Finding the Third Proportional to 561,113.63 and 870,618

Step by Step Solution

1. Step 1: Write the proportion equation
   561,113.63 : 870,618 = 870,618 : x
2. Step 2: Convert to fraction form
   561,113.63/870,618 = 870,618/x
3. Step 3: Cross multiply
   561,113.63x = 870,618 × 870,618
4. Step 4: Simplify right side
   561,113.63x = 757,975,701,924
5. Step 5: Solve for x
   x = 757,975,701,924/561,113.63
6. Step 6: Final answer
   x = 1,350,841.73