Finding the Third Proportional to 870,788 and 1,345,017

Step by Step Solution

1. Step 1: Write the proportion equation
   870,788 : 1,345,017 = 1,345,017 : x
2. Step 2: Convert to fraction form
   870,788/1,345,017 = 1,345,017/x
3. Step 3: Cross multiply
   870,788x = 1,345,017 × 1,345,017
4. Step 4: Simplify right side
   870,788x = 1,809,070,730,289
5. Step 5: Solve for x
   x = 1,809,070,730,289/870,788
6. Step 6: Final answer
   x = 2,077,509.95