Finding the Third Proportional to 2,478,784 and 5,255,138

Step by Step Solution

1. Step 1: Write the proportion equation
   2,478,784 : 5,255,138 = 5,255,138 : x
2. Step 2: Convert to fraction form
   2,478,784/5,255,138 = 5,255,138/x
3. Step 3: Cross multiply
   2,478,784x = 5,255,138 × 5,255,138
4. Step 4: Simplify right side
   2,478,784x = 27,616,475,399,044
5. Step 5: Solve for x
   x = 27,616,475,399,044/2,478,784
6. Step 6: Final answer
   x = 11,141,138.32