Finding the Third Proportional to 3,390,278 and 5,116,946

Step by Step Solution

1. Step 1: Write the proportion equation
   3,390,278 : 5,116,946 = 5,116,946 : x
2. Step 2: Convert to fraction form
   3,390,278/5,116,946 = 5,116,946/x
3. Step 3: Cross multiply
   3,390,278x = 5,116,946 × 5,116,946
4. Step 4: Simplify right side
   3,390,278x = 26,183,136,366,916
5. Step 5: Solve for x
   x = 26,183,136,366,916/3,390,278
6. Step 6: Final answer
   x = 7,723,005.71