Finding the Third Proportional to 5,518,656,382.78 and 12,105,736,479.28

Step by Step Solution

1. Step 1: Write the proportion equation
   5,518,656,382.78 : 12,105,736,479.28 = 12,105,736,479.28 : x
2. Step 2: Convert to fraction form
   5,518,656,382.78/12,105,736,479.28 = 12,105,736,479.28/x
3. Step 3: Cross multiply
   5,518,656,382.78x = 12,105,736,479.28 × 12,105,736,479.28
4. Step 4: Simplify right side
   5,518,656,382.78x = 146,548,855,705,794,740,224
5. Step 5: Solve for x
   x = 146,548,855,705,794,740,224/5,518,656,382.78
6. Step 6: Final answer
   x = 26,555,169,508.84