Finding the Third Proportional to 6,387,761,867 and 13,900,329,424

Step by Step Solution

1. Step 1: Write the proportion equation
   6,387,761,867 : 13,900,329,424 = 13,900,329,424 : x
2. Step 2: Convert to fraction form
   6,387,761,867/13,900,329,424 = 13,900,329,424/x
3. Step 3: Cross multiply
   6,387,761,867x = 13,900,329,424 × 13,900,329,424
4. Step 4: Simplify right side
   6,387,761,867x = 193,219,158,095,720,185,856
5. Step 5: Solve for x
   x = 193,219,158,095,720,185,856/6,387,761,867
6. Step 6: Final answer
   x = 30,248,334,568.31