Finding the Third Proportional to 64,718,842 and 139,042,986

Step by Step Solution

1. Step 1: Write the proportion equation
   64,718,842 : 139,042,986 = 139,042,986 : x
2. Step 2: Convert to fraction form
   64,718,842/139,042,986 = 139,042,986/x
3. Step 3: Cross multiply
   64,718,842x = 139,042,986 × 139,042,986
4. Step 4: Simplify right side
   64,718,842x = 19,332,951,955,796,196
5. Step 5: Solve for x
   x = 19,332,951,955,796,196/64,718,842
6. Step 6: Final answer
   x = 298,722,155.07