Finding the Third Proportional to 53,978,670 and 117,541,260

Step by Step Solution

1. Step 1: Write the proportion equation
   53,978,670 : 117,541,260 = 117,541,260 : x
2. Step 2: Convert to fraction form
   53,978,670/117,541,260 = 117,541,260/x
3. Step 3: Cross multiply
   53,978,670x = 117,541,260 × 117,541,260
4. Step 4: Simplify right side
   53,978,670x = 13,815,947,802,387,600
5. Step 5: Solve for x
   x = 13,815,947,802,387,600/53,978,670
6. Step 6: Final answer
   x = 255,951,986.26