Finding the Third Proportional to 64,947,768 and 142,751,856

Step by Step Solution

1. Step 1: Write the proportion equation
   64,947,768 : 142,751,856 = 142,751,856 : x
2. Step 2: Convert to fraction form
   64,947,768/142,751,856 = 142,751,856/x
3. Step 3: Cross multiply
   64,947,768x = 142,751,856 × 142,751,856
4. Step 4: Simplify right side
   64,947,768x = 20,378,092,391,444,736
5. Step 5: Solve for x
   x = 20,378,092,391,444,736/64,947,768
6. Step 6: Final answer
   x = 313,761,242.59