Finding the Third Proportional to 1,378,724 and 2,916,420

Step by Step Solution

1. Step 1: Write the proportion equation
   1,378,724 : 2,916,420 = 2,916,420 : x
2. Step 2: Convert to fraction form
   1,378,724/2,916,420 = 2,916,420/x
3. Step 3: Cross multiply
   1,378,724x = 2,916,420 × 2,916,420
4. Step 4: Simplify right side
   1,378,724x = 8,505,505,616,400
5. Step 5: Solve for x
   x = 8,505,505,616,400/1,378,724
6. Step 6: Final answer
   x = 6,169,114.06