Finding the Third Proportional to 2,139,520 and 3,143,784

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139,520 : 3,143,784 = 3,143,784 : x
2. Step 2: Convert to fraction form
   2,139,520/3,143,784 = 3,143,784/x
3. Step 3: Cross multiply
   2,139,520x = 3,143,784 × 3,143,784
4. Step 4: Simplify right side
   2,139,520x = 9,883,377,838,656
5. Step 5: Solve for x
   x = 9,883,377,838,656/2,139,520
6. Step 6: Final answer
   x = 4,619,436.99