Finding the Third Proportional to 108,781,538 and 168,686,826

Step by Step Solution

1. Step 1: Write the proportion equation
   108,781,538 : 168,686,826 = 168,686,826 : x
2. Step 2: Convert to fraction form
   108,781,538/168,686,826 = 168,686,826/x
3. Step 3: Cross multiply
   108,781,538x = 168,686,826 × 168,686,826
4. Step 4: Simplify right side
   108,781,538x = 28,455,245,265,954,276
5. Step 5: Solve for x
   x = 28,455,245,265,954,276/108,781,538
6. Step 6: Final answer
   x = 261,581,567.88