Finding the Third Proportional to 613,144 and 915,940

Step by Step Solution

1. Step 1: Write the proportion equation
   613,144 : 915,940 = 915,940 : x
2. Step 2: Convert to fraction form
   613,144/915,940 = 915,940/x
3. Step 3: Cross multiply
   613,144x = 915,940 × 915,940
4. Step 4: Simplify right side
   613,144x = 838,946,083,600
5. Step 5: Solve for x
   x = 838,946,083,600/613,144
6. Step 6: Final answer
   x = 1,368,269.25