Finding the Third Proportional to 586,640 and 915,016

Step by Step Solution

1. Step 1: Write the proportion equation
   586,640 : 915,016 = 915,016 : x
2. Step 2: Convert to fraction form
   586,640/915,016 = 915,016/x
3. Step 3: Cross multiply
   586,640x = 915,016 × 915,016
4. Step 4: Simplify right side
   586,640x = 837,254,280,256
5. Step 5: Solve for x
   x = 837,254,280,256/586,640
6. Step 6: Final answer
   x = 1,427,202.85