Finding the Third Proportional to 39,855,978 and 85,824,648

Step by Step Solution

1. Step 1: Write the proportion equation
   39,855,978 : 85,824,648 = 85,824,648 : x
2. Step 2: Convert to fraction form
   39,855,978/85,824,648 = 85,824,648/x
3. Step 3: Cross multiply
   39,855,978x = 85,824,648 × 85,824,648
4. Step 4: Simplify right side
   39,855,978x = 7,365,870,204,323,904
5. Step 5: Solve for x
   x = 7,365,870,204,323,904/39,855,978
6. Step 6: Final answer
   x = 184,812,180.60