Finding the Third Proportional to 602,504 and 870,585.50

Step by Step Solution

1. Step 1: Write the proportion equation
   602,504 : 870,585.50 = 870,585.50 : x
2. Step 2: Convert to fraction form
   602,504/870,585.50 = 870,585.50/x
3. Step 3: Cross multiply
   602,504x = 870,585.50 × 870,585.50
4. Step 4: Simplify right side
   602,504x = 757,919,112,810.25
5. Step 5: Solve for x
   x = 757,919,112,810.25/602,504
6. Step 6: Final answer
   x = 1,257,948.68